Sunday, November 3, 2019

Retention assignment Coursework Example | Topics and Well Written Essays - 250 words

Retention assignment - Coursework Example taurant management has successfully employed a retention strategy leading to a sustained employees low turnover, improved productivity and consequently the company has grown tremendously in the food and beverage industry. The company focuses on three primary one of which includes training and hiring the right people to each job specification. With this strategy, the company management occasionally undertakes recruitment policy reviews in order to enhance retention as per Equal Employment Opportunities (EEO) strategy (http://www.eeoc.gov/federal/retention.cfm). In 2008, the company trained its employees on enhancing productivity through focusing on the mission statement and actual service delivery. Consequently, the company reversed declining share growth to 11 consecutive record reports back from 42% share losses to a remarkable 12.4% share growth. The success was achieved when employees were retained and trained to reverse the errors in shares instead of possible layoffs (Taylor 23). Secondly, the company regularly conducts employee climate surveys using the 36o degree evaluation strategy. Under this approach, the management conducts performance evaluation with total focus on all spheres of employee including interpersonal relationship in the workplace. The strategy helps the managers to assess workforce attitude and job satisfaction and make changes before employees quit. Through this Strategy, Starbuck has improved its production and raise its employees by 66% from 2003 to 2013 (Liebowitz 17). Certainly, this is a tremendous recipe for the companys growth since high employees means higher productivity and subsequently increase in profits. Through employing the right people and training them, Starbuck has achieved companys growth. In addition, conducting employees evaluation and surveys on job performance has led to the retention of employees and increase in the

Friday, November 1, 2019

Biohacking in the mass market Essay Example | Topics and Well Written Essays - 3000 words

Biohacking in the mass market - Essay Example This hacking ethic has resurfaced again in garages, kitchens and closets all throughout the world. In this modern world, the practice of soldering circuit boards and programming in FORTRAN has been replaced with splicing DNA and cloning bacteria. These practices in particular are referred to, what is called in today’s world, as bio-hacking. Bio-hackers involved with this practice, manipulate the building blocks of life thereby advancing knowledge and creating new life forms with novel purposes. As has been witnessed in the past few decades, computer hacker movement sparked a revolution in the field of computer science and information technology. The revolution increased the pace at which technology had progressed thereby permanently changing the societal landscape. Similarly, it is expected that the bio-hacker movement or rather the practice of bio-hacking will have a parallel effect on the technologies solely based on biology. These changes will not only bring about a massive development in the field of science but will also fundamentally alter human experience itself. The pioneers of this regime shift would be today’s bio-hackers. ... This is primarily because with proper information more and more people will gain expertise about this product and eventually will be able to make an informed decision regarding their usage and utility (Alba and Hutchinson, 1987). The underlying idea of this business is to distribute and install the body modifications using an agreement with a chain of tattoo studios. The product that will be offered to customers is magnetic implant which is another form of body piercing. According to Brownlie and Saren (1991, p. 35), â€Å"the marketing concept defines basic benchmarks against which marketing practice, i.e. what organizations can be judged.† In order to make a successful business venture, all those benchmarks need to be met. The result of these actions can be easily measured by the market share and profitability that the business will achieve, once it has fully implemented all the marketing strategies. One of the primary drawbacks related to this business approach is that it i s a completely unexplored area and henceforth it is going to be comparatively difficult for the owner to assess the risk associated with every operation. In addition to that, the pricing of the product will be a cause of concern as there is no relative market to compare the prices in order to set it accordingly. There is a potential failure associated with the pricing of the product. If the product is priced too high, then it will trigger a negative signal within the target market and as a result, the consumers might choose to refrain from availing products from this entity. Furthermore, another cause of failure that can be attributed to this business approach is the potential side

Wednesday, October 30, 2019

Estate Planning Research Paper Example | Topics and Well Written Essays - 1500 words

Estate Planning - Research Paper Example Without a comprehensive estate plan, a significant part of the work you've done throughout your life, both at your job and with your investments, can be lost or given to unintended beneficiaries" (InvestorGuide.com). Estate planning is also important for recipients of social security benefits as "receiving an inheritance may alter his/her social security entitlement. This is particularly prevalent when one member of a couple dies as the survivor is then treated as a single person with lower thresholds under income and assets tests. This means that the levels of assets and income at which the pension starts to reduce and ultimately ceases are reduced which may result in a lower pension or even a complete loss of pension for the beneficiary" (Social security estate planning implications ). Now there are more than one way of planning your estate, especially what to expect after death. The most popular of which is the last will and testament. However, recent developments in finance provides estate planners a better way of handling their estate, that which entails lesser cost, direct or indirect to the heirs: trusts and superannuation. In this particular paper, we will show the many ways in which trust and superannuation supersedes the benefits of the estate planner and their heirs; both through current literatures and through analysis. "A trust is an arrangement under which one person, called a trustee, holds legal title to property for another person, called a beneficiary. You can be the trustee of your own living trust, keeping full control over all property held in trust. A 'living trust' (also called an "inter vivos" trust) is simply a trust you create while you're alive, rather than one that is created at your death" (Nolo). One good thing about living trust is it helps one evade probate, helps reduce taxes and also sets up a long-term property management (Nolo). Trust Versus Will "The Trust owns the legal title to the property in it while you are still alive, and since a Trust does not end at your death, it will still own the property when you die. You put instructions in the Trust for how the Trustee, or person controlling the Trust, should distribute the Trust property, and the Trustee will carry out those directions" (FreeAdvice.com). One important feature about the trust is it can be distributed without necessarily going through the probate process - a "legal process which inherited property goes through in order to transfer the title of the property from the decedent to the beneficiary" (FreeAdvice.com). The main reasons why trusts are advantageous especially for the high net worth individual is it is far less expensive to administer (FreeAdvice.com). On the other hand, "a will is a document that transfers property to others after your death. Because you still own the property at the time you die, all the property transferred in the Will must go through the probate process, which is often slow and costly" (FreeAdvice.com). Below is a summary of the advantages of a trust over a will: Avoid probate - Unlike

Monday, October 28, 2019

Default and Disputes Essay Example for Free

Default and Disputes Essay In this paper I will discuss the reasoning and methodology behind government contract defaults and disputes. I will also give recommendation to acquisition and cost containment. The standard contract clause which gives a customer the right to unilaterally terminate the contractor if the contractor fails to perform according to the specified terms. The contractor is generally not entitled to any payment for the unfinished part of the contract and, instead, may be liable for (1) repayment of monies advanced, (2) liquidated and other damages, and (3) excess cost incurred by the customer in completing the contract under a new contractor. Two primary types of terminations can arise under government contracts: â€Å"termination for default† and â€Å"termination for the government’s convenience†. Besides a criminal conviction or debarment or suspension for default is undoubtedly the most severe agency sanction that a termination can befall a government contactor. Terminations for default are much more common in supply contracts than in construction contracts. The standard clause used in supply and service contracts recites that the government has the right terminate for default if the contractor fails to (1) deliver the contract supplies or perform the services on time, (2) make progress so as to endanger performance of the contract. The â€Å"Termination for Cause† term also names three bases for terminating a commercial item contract for default: (a) â€Å"any default† by the contractor, (b) failure by the contractor â€Å"to comply with any contact terms or conditions,† and (c) failure by the contractor to provide the government on request, with â€Å"adequate assurances of future performance. The government’s right to terminate is not limited by standard inspection clauses, because they permit the government to exercise any other rights and remedies allowed by the contract. â€Å"Default terminations are provided for in government contracts under standard clauses set forth in the FAR. 52. 249–8 Def ault (Fixed-Price Supply and Service). As prescribed in 49. 04(a)(1), insert the following clause: DEFAULT (FIXED-PRICE SUPPLY AND SERVICE) (APR 1984) (a)(1) The Government may, subject to paragraphs (c) and (d) below, by written notice of default to the Contractor, terminate this contract in whole or in part if the Con- tractor fails to—(i) Deliver the supplies or to perform the services within the time specified in this contract or any extension; (ii) Make progress, so as to endanger performance of this contract (but see subparagraph (a)(2) below); or (iii) Perform any of the other provisions of this contract (but see subparagraph (a)(2) below). 2) The Government’s right to terminate this contract under subdivisions (1)(ii) and (1)(iii) above, may be exercised if the Con- tractor does not cure such failure within 10 days (or more if authorized in writing by the Contracting Officer) after receipt of the no- tice from the Contracting Officer specifying the failure. (b) If the Government terminates this contr act in whole or in part, it may acquire, under the terms and in the manner the Contracting Officer considers appropriate, supplies or services similar to those terminated, and the Contractor will be liable to the Government for any excess costs for those sup- plies or services. However, the Contractor shall continue the work not terminated. (c) Except for defaults of subcontractors at any tier, the Contractor shall not be liable for any excess costs if the failure to perform the contract arises from causes beyond the control and without the fault or negligence of the Contractor. Examples of such causes include (1) acts of God or of the public enemy, (2) acts of the Government in either its sovereign or contractual capacity, (3) fires, (4) floods, (5) epidemics, (6) quarantine restrictions (7) strikes, (8) freight embargoes, and (9) unusually severe weather. In each instance the failure to perform must be beyond the control and without the fault or negligence of the Contractor. (d) If the failure to perform is caused by the default of a subcontractor at any tier, and if the cause of the default is beyond the control of both the Contractor and subcontractor, and without the fault or negligence of either, the Contractor shall not be liable for any excess costs for failure to perform, unless the subcontracted supplies or services were obtainable from other sources in sufficient time for the Contractor to meet the required delivery schedule. e) If this contract is terminated for de- fault, the Government may require the Con- tractor to transfer title and deliver to the Government, as directed by the Contracting Officer, any (1) completed supplies, and (2) partially completed supplies and materials, parts, tools, dies, jigs, fixtures, plans, drawings, information, and contract rights (collectively referred to as manufacturing materials in thi s clause) that the Contractor has specifically produced or acquired for the terminated portion of this contract. Upon direction of the Contracting Officer, the Con- tractor shall also protect and preserve property in its possession in which the Government has an interest. (f) The Government shall pay contract price for completed supplies delivered and accepted. The Contractor and Contracting Officer shall agree on the amount of payment for manufacturing materials delivered and accepted and for the protection and preservation of the property. Failure to agree will be a dispute under the Disputes clause. The Government may withhold from these amounts any sum the Contracting Officer determines to be necessary to protect the Government against loss because of outstanding liens or claims of former lien holders. (g) If, after termination, it is determined that the Contractor was not in default, or that the default was excusable, the rights and obligations of the parties shall be the same as if the termination had been issued for the convenience of the Government. (h) The rights and remedies of the Government in this clause are in addition to any other rights and remedies provided by law or nder this contract. FAR 52. 249-10 â€Å"Default (Fixed-Price Construction)† Clause (a) If the contractor refuses or fails to prosecute the work or any separable part, with the diligence what will insure it’s completion within the time specified in this contract including any extension, or fails to complete the work within this time, the government may, by written notice to the contractor , terminate the right to proceed with the work (or the separable part of the work) that has been delayed. In this event, the government may take over the work and complete it by contract or otherwise, may take over the work and complete it by contract or otherwise, and may take possession of and use any material, appliances, and plant on the work site necessary for completing the work. Although the â€Å"Termination for Cause† term in commercial item contracts does not contain a â€Å"cure notice† requirement, the FAR termination procedures for commercial item contracts require the Contracting Officer to send a standard cure notice ‘prior to terminating a contract for a reason other than late delivery. Consequences And Remedies Of â€Å"Termination For Default† And â€Å"Termination For Convenience† If a board or court determines that the contractor was not actually in default or the default was excusable, the termination for default will be converted into a termination for convenience. Similarly, before the appeal is even decided, the Contracting Office r can convert the termination for default into one for the government’s convenience. The Contractor’s recovery under a convenience termination may be significant. For example, under a convenience termination, the contractor is eligible to recover its costs of performance, some â€Å"continuing costs,† settlement expenses, and a reasonable profit on completed work. Should the contractor be unsuccessful in contesting the propriety of the default termination itself, it may still be able to challenge the excess costs assessment and achieve a reduction or elimination of those costs. The Fulford doctrine permits contractors to challenge the government’s imposition of excess re-procurement costs even if the time has expired for appealing the underlying default termination, but does not trump the Contract Disputes Act election doctrine. Remedy of â€Å"Excess Cost of Re-procurement† and â€Å"Liquidated Damages† The standard measures of excess costs is the difference between the contract price of the terminated contract and the price the government is required to pay to the re-procurement contractor for quantity f supplies or services called for under the terminated contract or for completion of unfinished work remaining under the terminated contract. To assess excess costs against the defaulted contractor, the government must show that the re-procurement contract has been performed and that complete payment has been made. The government may not obtain re-procurement costs for work that the government prevented the contractor from performing. If the default-terminated contract contains a â€Å"Liquidated Damages† clause, those damages may be assessed against the contractor until the government obtains completion of the contract work. Liquidated damages are in addition to the excess costs of re-procurement The Liquidated Damages† clause used in fixed-price supply and service contracts provides that, in the case of a termination for default, the contractor shall be liable for liquidated damages (as well as excess costs) â€Å"until the time the government may reasonably obtain delivery or performance of similar supplies or services. The â€Å"Liquidated Damages† clause requires the contractor to pay the government a specific amount for each calendar day of delay. The stipulated amount of the liquidated damages is set at the time the contract is entered into and is the parties’ estimate of the extent of loss that one party’s breach of the contract would cause to the other. Government policy is to use a â€Å"Liquidated Damages† clause in a contract when both (1)the time of delivery or performance is such an important factor that the government may reasonably expect to suffer damages if the delivery or performance is delinquent, and (2) the extent or amount or actual damages would be difficult or impossible to ascertain or prove. Contract Disputes Act The Contract Disputes Act of 1978 (â€Å"CDA†), which became effective on March 1, 1979, establishes the procedures for handling claims relating to United States Federal Government contracts. All claims by the contractor against the Federal Government must be submitted in writing to the Governments Contracting Officer for a decision. All claims by the Federal Government against the contractor must be the subject of a decision by the Contracting Officer. Apart from claims by the Federal Government alleging fraud in connection with a claim by the contractor, all claims by either the Federal Government or the contractor must be submitted within six years after the accrual of the claim. Claims by the contractor that exceed $100,000 must be accompanied by a certification that (i) the claim is made in good faith, (ii) the supporting data are accurate and complete to the best of the contractors knowledge and belief, (iii) the amount requested represents the contract adjustment for which the contractor believes the Federal Government is liable, and (iv) the certifier is authorized to submit the certification on behalf of the contractor. There are procedures in the statute for remedying certifications that do not exactly mimic the required certification language. For claims of $100,000 or less, the Contracting Officer is required to issue a decision within 60 days of receipt of the claim provided the contractor requests a decision within that time period. For claims in excess of $100,000, the Contracting Officer is required, within 60 days, either to issue a decision or notify the contractor when a decision will be issued. All decisions should be issued within a reasonable time, taking into account the nature of the claim, and, if they are not, the contractor may either request a tribunal to direct the Contracting Officer to issue a decision within a specified time or treat the failure to issue a decision as an appealable deemed denial of the claim. If the contractor is dissatisfied with the Contracting Officers decision on a claim, the contractor may (i) appeal that decision to the cognizant agency board of contractor appeals within 90 days of receipt of the decision or (ii) bring suit on the claim in the United States Court of Federal Claims within 12 months. Decisions not appealed within one of these time periods become final and conclusive. There are procedures in the statute authorizing the use of mutually agreeable alternative dispute resolution techniques for handling disputes and well as for the use of streamlined and accelerated litigation procedures for smaller claims at the boards of contract appeals. The losing party may appeal a decision by either a board of contract appeals or the United States Court of Federal Claims to the Court of Appeals for the Federal Circuit. A contractor is entitled to interest on the amount found due on its claim running from the date the Contracting Officer received the claim until the claim is paid. Good acquisition planning is crucial to the overall project objective, government spending, tailored to objectives and constraints, and is flexible enough to allow innovation and modification as the project evolves. The strategy balances cost and effectiveness through development of technological options, exploration of design concepts, and planning and conduct of acquisition activities. These elements are directed toward either a planned Initial Operational Capability or retention for possible future use, while adhering to a program budget. The strategy should be structured to achieve program stability by minimizing technical, schedule, and cost risks. Thus the criteria of realism, stability, balance, flexibility, and managed risk should be used to guide the development and execution of an acquisition strategy and to evaluate its effectiveness. The acquisition strategy must reflect the interrelationships and schedule of acquisition phases and events based on a logical sequence of demonstrated accomplishments, not on fiscal or calendar expediency.

Saturday, October 26, 2019

The Baby Can Sing and Other Stories by Judith Slater :: Biography Biographies Essays

The Baby Can Sing and Other Stories by Judith Slater When a group of short stories is put together, in most cases there is a significant aspect in why the writer chooses certain stories and in a certain order, much like books of poetry. There is a reason to the writer's madness. If a writer has enough stories to fill a book that is so good it deserves to be printed and stay in print, they've probably written enough stories to fill two or more books and those that made it were what the author felt to be the best or looked the best together. The stories have a connection that links them together. In The Baby Can Sing and Other Stories, all of the stories tell the tales of going off away from the usual or the norm. Let's assume for the sake of argument that Judith Slater wasn't available to explain why she did what she did with the book and stories involved. The writer is unreachable for questions or comments for the majority of the time, so much that the idea of contacting the actual writer is often not thought of. Without knowing anything, the first story "The Baby Can Sing" is a phenomenal introduction to the collection. Based on reality, the story talks about some imaginary baby that can dance and sing. It doesn't have a beginning, middle, and end, making it different from a traditional story. It has no climax or dramatic point. It is the stream of consciousness that the narrator rides along away from whatever the reality is. The class came to a conclusion that the narrator was actually pregnant but something happened to the baby. At one point since she says, "When I was pregnant..." and that is the only comment in the past tense. Everything else is in the mystical present or the 'would be' future, both being skeptical and wishing. The class speculated that whatever happened to this woman's baby (i.e. abortion, miscarriage, etc.) was not good, as if losing a baby in any way were a blessed event. In that case, the narrator could be taking her mental state away from the harsh reality and to a dreamlike place of the impossible.

Thursday, October 24, 2019

Multistep Synthesis of Benzilic Acid

Multi-Step Synthesis of Benzilic Acid from Benzoin Abstract: The main purpose of this experiment was to convert a secondary alcohol to a ketone, utilizing a mild and selective oxidizing agent. In addition, this converted alpha diketone was then subjected to rearrangement to a carboxylate salt, then acidification, to produce an alpha-hydroxyacid. In this experiment, benzoin was used and converted into benzil, which was then used to synthesize benzillic acid. The yields were not ideal: . 081g of benzil- a 27. 5% yield; . 038g of benzilic acid- a 34. 7% yield. The matching melting points and IR readings, however, confirmed a high degree of purity for each compound: 95. 6 °C for benzil, and 104. 5 °C for benzilic acid, meager . 632% and . 333% discrepancy from literature values, respectively. Finally, the IR absorption frequencies on the attached graphs illustrate the successful removal of the alcohol in the oxidation step and successive return of the alcohol/creation of carboxylic acid, following rearrangement. Multistep syntheses are essential to producing complex molecules.This experiment illustrated the importance of verifying intermediary products are pure, by utilizing different techniques such as IR and melting point. Below is a diagram of the overall reaction. First Reaction: Second Reaction: Introduction: The multistep reaction from Benzoin to Benzillic acid involves multiple organic chemistry concepts, such as oxidation and re arrangement. The first part of the experiment involves the oxidation of benzoin to benzil, utilizing a mild oxidating agent. The process of oxidation is used in all organic chemistry labs and is essential to a wide variety of synthesis reactions.In addition, oxidation reactions are essential in the the biochemistry of most living organisms. This experiment also breaks down oxidizing agents into selective and non-selective agents. For this experiment’s purposes, nitric acid was used, as it is selective towards secondary alcohols, oxidizing them to ketones. The second part of this experiment involves the rearrangement of benzil to benzillic acid or, more generally, the reaction of an alpha-diketone to an alpha-hydroxyacid. This reaction was first conducted by Justus von Liebig in 1838 (1).The basics of this reaction involve the formation of a carboxylate salt from an alpha-diketone; acid is then added to produce an aromatic alpha-hydroxyacid. The reaction conducted in this expe riment is an essential base step in the synthesis of pharmaceuticals and certain hallucinogenic drugs. The synthesis of Benzil from Benzoin is shown below: The above reaction shows the condensed oxidation of benzoin to benzil. The following diagram shows the condensed reaction of benzil to benzillic acid. Rearrangement occurs to form a salt, then the salt is acidified to form benzillic acid.Once the products of each step were obtained- benzil and benzillic acid- their melting points and IR readings were obtained. These two measurements were used to prove that the correct product was formed without any impurities. One of the major risks in this experiment is loss of product through multiple filtrations. To minimize this problem, the filtration steps should be carefully and slowly executed. This ensures that the least amount of reactants are lost. In addition, recrystallization can occur too quickly if a hot solution is directly placed in an ice bath, allowing impurities to be trapped within the precipitate’s crystal lattice.To avoid this, the solutions should be given ample time to cool to room temperature before adding the solutions to an ice bath. These precautions were taken to try to reach our goal of a high percent yield of product with little to no impurities. There were no new techniques used in this experiment, however there were old techniques used to provide information/obtain a product. The first technique was crystallization which was useful to obtain a solid product that can then be purified. Another old technique utilized was filtration, via hirsch funnel and vacuum. This technique was used to obtain a purified product, removing impurities.Once the final solid product was obtained in both reactions the melting point procedure was used to determine the level of remaining impurity of the final product, comparing the experimental and expected values found in literature. In conjunction with the melting point procedure, infrared spectroscopy was used to reveal the different functional groups of the products. In other words, the IR machine indicates whether our final product matches up with the desired one, matching carbonyl and alcohol absorption peaks (or the lack thereof) to their theoretical presence (either benzil or benzillic acid).Procedure: 1. 5ml of nitric acid was added to . 30g of benzoin in a conical vial with a stir vane. The mixture was then heated in a 70 degree Celsius water bath, while stirred, for one hour. The mixture in the conical vial was then cooled to room temperature and, using a pipette, the solution was transferred to a beaker containing 4ml of ice water. The mixture slowly crystallized in the beaker and the crystallized product was filtered on a hirsch funnel with vacuum. 5 ml of cold water was used to wash the product and then the product was allowed to dry.The solid product was then collected from the funnel and added to a hot 95% ethanol solution in an Erlenmeyer flask and completely dissolved . Once the solid was dissolved completely, the solution was allowed to cool to room temperature. Once yellow crystals formed, the solution was placed into an ice bath. The product was then collected and filtered again on a hirsch funnel with vacuum. The product was then washed with ice cold 95% ethanol. Once completely dried, the crystals were weighed and the final mass, percent yield, melting point, and IR reading of the crystallized product measured/calculated. 100g of benzil and . 30ml of ethanol were mixed in a conical vial.The solution in the conical vial was then heated to about 100 degrees celsius until the benzil dissolved. Then . 25ml of potassium hydroxide was added dropwise to the vial. The mixture was then heated to 110 degrees for 15 minutes, then allowed to slowly cool to room temperature. The product was transferred with a pipette to a 10ml beaker and cooled in an ice bath for 15 minutes. 1ml portions of ethanol were added once crystallized and filtered. The product w as then transferred to a 10ml beaker with 70 °C water, allowing the product to dissolve. 0. ml of HCL acid was added dropwise and the mixture was allowed to cool and then transferred to an ice bath. The crystals were collected on a hirsch funnel and washed with 4ml of cold ice water.The crystals were dried and collected for final mass, percent yield, melting point, and IR reading. Results and Discussion: Table 1: Mass and Molar Quantity of Starting and Synthesized Materials; Percentage Yield and Both Experimental and Theoretical Melting Points of Products and Percent Discrepancy| Compound| Mass (g)| Quantity (mol x10-4)| % Yield| M. P. EXP ( °C)| M. P. THEO ( °C)| % D| Benzoin| 0. 298| 14| -| -| -| -| Benzil Yield| 0. 081| 3. 5| 27. 50%| 95. 6| 95. 0| 0. 632%| Benzil Start| 0. 1001| 4. 76| -| -| -|   | Benzilic Acid Yield| 0. 038| 1. 67| 34. 97%| 149. 5| 150| 0. 333%| The initial mass of benzoin and its yield of benzil in the first part of the experiment, as well as the star ting mass of benzil and its yield of benzilic acid in the second part.Note that the yield from part 1 was not the same amount used at the start of part 2. Also shown: the converted molar quantity of each mass and corresponding percent yield for the two synthesized compound, as well as their experimental and theoretical melting points and percent discrepancy between these values. As noted, the â€Å"Start† weight of Benzil- in row 3 of Table 1- differs from the â€Å"Yield† weight- in row 2. The yield, itself, was not used in the second part of this experiment: the synthesis of benzilic acid from benzil. Furthermore, an error occurred in the second portion of the experiment and very little acid product was salvaged; thus, the yield shown for benzilic acid is data that has been shared from another synthesis (this product yield was from _____ and his lab partner). Additionally, this alternative product was the one used in determining a melting point. Graph 1 illustrates t he successful oxidation of benzil, as the alcohol has been eliminated. As expected, it also retains a strong peak at ~1657cm-1, indicating the carbonyl groups present in the diketone, although this is a slightly lower absorption than expected. Graph 2 also presents a successful synthesis, as a relatively strong and somewhat broad peak appears around 3390cm-1, suggesting the reemergence of an alcohol and potential presence of the carboxylic acid; that the peak at 1715cm-1 remains strong, confirms his.SAMPLE CALCULATIONSCalculation of Benzil Percent Yield: Moles BenzilMoles Benzoin=. 081g? 210. 23g/mol. 298g? 212. 24g/mol=3. 85? 10-4mol14. 0? 10-4mol=0. 275? 100%=27. 5% Calculation of Benzilic Acid Percent Yield: Moles Benzilic AcidMoles Benzil=. 0380? 228. 25g/mol. 1001? 210. 23g/mol=1. 67? 10-4mol4. 76? 10-4mol=0. 3497? 100%=34. 97% Calculation of Percent Discrepancy in Benzil Melting Point: %D=xTHEO-xEXPxTHEO? 100%= 95. 0? -95. 6? 95. 0? =. 00632Ãâ€"100%=0. 32% Calculation of Perc ent Discrepancy in Benzilic Acid Melting Point: %D=xTHEO-xEXPxTHEO? 100%= 150. 0? -149. 5? 150. 0? =. 0033Ãâ€"100%=0. 33% Both steps of this experiment’s synthesis are considered successful. Though not in the desired quantities, a product of benzil was obtained from benzoin and that of benzoic acid from benzil. The initial step, synthesis of benzil, resulted in a yield of 27. 5%, despite an encouragingly smooth synthesis. The synthesis may have called for a second, more thorough recrystallization to appeal this yield.The recrystallization was performed correctly; however, the mixture was likely not allowed to cool at an ideally slow rate. It was removed from the hot plate and, shortly thereafter, transferred to the ice bath- likely, before it had calmed to room temperature. This could have interrupted the ability for the product to crystallize without impurities being trapped within its lattice. During the second portion of this experiment, a known, pure quantity of benzil w as used to synthesize a 34. 97% yield of benzilic acid. This small yield is likely also due to factors similar to the aforementioned.Additionally, the recorded yield was shared from another synthesis; the original synthesis performed yielded too small and impure an amount of product to effectively determine a melting point and I. R. spectra. This failure may certainly be attributed to an error during the recrystallization, prior to the initial filtration. Proper care was taken to allow the solution to cool very slowly during this second recrystallization. Unfortunately, once the solution was transferred to the ice bath, a large chunk of ice crystals somehow fell over the lip of the flask and into the mixture. Being that the intermediate was relatively water

Wednesday, October 23, 2019

Language Arts Essay

This topic will provide students with an interactive method of learning numeracy, literacy, inquiry and responsibility within the environment in which we live (Rice & Wilson, 1999). It gives ample leeway for creating lessons within the subject areas of Science, Mathematics, Language Arts, and Social Studies. Such a unit will make students aware of the place and role of trees in the environment. It will also enhance their knowledge of the structure and function of trees as living things. Students will also understand how humans depend on trees in the environment and also how the activities of humans have adversely affected the environment in the past. Finally, it will make students aware of how their individual actions toward trees can improve the state of the environment. Overall Expectations: 1. Students will learn how trees grow. 2. Students will learn the uses that humans have for trees. 3. Students will explore what humans and trees have in common. 4. Students will learn size and texture comparisons from parts of trees. 5. Students will learn how to count using tree limbs, leaves, and other tree parts. 6. Students will learn numeracy and estimation by exploring how many more limbs are possessed by one tree over another. 7. Students will learn vocabulary and how to construct sentences about trees. 8. Students will learn about forests and how they have been harmed by humans in the past Specific Expectations Integrated Science Students will be expected to make connections between trees and the things in their lives made from trees. They will be expected to be able to tell the facts about trees. Such prompts will be given to allow them to name such characteristics as size, colour, and the different parts of a tree that they are familiar with. Student will also be expected to learn observation and note-taking skills as part of the scientific process. Mathematics Students should be able to demonstrate their knowledge of counting objects and of the fact that one number represents on object via counting branches, leaves, and other parts of trees. They are also expected to be able to perform arithmetic operations of adding and subtracting using tree icons as computational tools. Students are also expected to learn (or reinforce knowledge of) descriptors such as larger, longer, bigger, taller, thinner, and other comparisons. Language Arts Students are expected to learn vocabulary connected with trees and to recognize them as sight words. They are expected to make connections between trees, their parts, animals and humans, and should be able to construct simple sentences that explain facts about them. Students should also be able to recognize and properly use comparative adjectives such as tall and taller, thin and thinner, long and longer, etc. Specific Expectations Students will be expected to be able to understand the interactions of humans and animals with trees. They should be able to name such things that they have seen in trees, such as birds nests and squirrels. They will then be expected to understand whether trees are alive or dead and required to say why they have answered in a specific way.