Author: chris

Abstract

Chemical reactions are a daily occurrence in individuals’ lives. The reaction revolves around the interaction of atoms, chemical bonds, and essential activities. The reaction results to diverse activities such as combustion, rusting, and photosynthesis. A critical analysis of the phenomenon is essential towards enabling individuals to gather credible information on the role of the limiting reactants in a particular reaction. A critical analysis of the available literature further reveals that two factors play a crucial role in determining the yield in a particular chemical reaction. The influential factors include the amount of the starting materials and the anticipated percentage yield. Scientists further affirm that adjustment of environmental factors such as temperature and pressure may increase the yield of the products in a chemical reaction. The limiting reactant also helps in determining the amount of the yield. The effective recording of data further helps in the derivation of credible findings from a particular study.

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The Limiting Reactant and the Mass Percentage of a Solution

The study reveals that chemical reactions play an essential part in individuals’ lives. The reactions lead to the emergence of diverse essential activities such as combustion, rusting, and photosynthesis. A critical analysis of the available literature further reveals that two factors play a crucial role in determining the yield in a particular chemical reaction (Marin 20). The influential factors include; the amount of the starting materials and the anticipated percentage yield. Scientists further affirm that adjustment of environmental factors such as temperature and pressure may increase the yield of the products in a chemical reaction. The limiting reactant also helps in determining the amount of the yield (Davis et al. 36). A critical review of the existing literature further postulates that diverse chemical reactions occur in relation to a fixed number of moles. A critical analysis of the phenomenon is essentials towards determining the limiting reactant and the mass percentage of the solution in a reaction between sodium phosphate dodecahydrate (Na3PO4·12H2O) and barium chloride dihydrate (BaCl2·2H2O).

A Brief Discussion of the Materials and Methods

The study indicates that the reaction between Na3PO4·12H2O and BaCl2·2H2O results into an unknown solution. The researcher aims at identifying the limiting reagent and the mass percentage of each component (Davis et al. 36). Essentially, the reaction of the Na3PO4·12H2O and BaCl2·2H2O in an aqueous solution leads to the production of solid barium phosphate (Ba3 (PO4)2). The subsequent chemical equation represents the reaction.

2 Na3PO4·12H2O (aq) + 3 BaCl2·2H2O (aq) → Ba3 (PO4)2(s) + 6 NaCl (aq) + 30 H2O (l)

The reaction reveals that the two reacting salts and the sodium chloride (NaCL) are highly soluble in water. However, barium sulphate (Ba3 (PO4)2) is among the solids that do not dissolve in water. The subsequent ionic equation also represents the reaction.

6 Na+ + 2 PO43- + 24 H2O (l) + 3 Ba2+ + 6 Cl- + 6 H2O (l) → Ba3 (PO4)2(s) + 6 Na+ + 6 Cl- + 30 H2O (l)

The formulation of the net ionic reaction is also essentials in removing the spectator ions, cations, and anions. The interaction between the cations, anions, and spectators ions does not result to credible observable chemical reactions (Davis et al. 36). The formulation of the net ionic equation is also essential towards identifying the resulting precipitate. The subsequent represents the net ionic reaction.

2 PO43- + 3 Ba2+ → Ba3 (PO4)2(s)

Therefore the unknown solid sample 2A is Ba3 (PO4)2(s). The solid will help in the identification of the limiting reagent.

Results

The table represents a summary of the reaction and the results.

Original mass of the unknown				The Mass of Precipitate					Test Results For Limiting Reagent
	Trial 1	2	3			Trial 1	2	3		Trial1on precipitate	2	3
Mass of initial sample and vial (g)	35.866	35.862	35.862		Mass of filter and product	2.1235	1.4802	1.7506	Addition of drops of Na3PO4•12H2O	No	No	Slight haze
Mass of vial (g)	34.083	32.323	33.652		Mass of filter	1.2903	1.309	1.30002	Addition of drops of BaCl2•2H2O	Yes	Yes	Yes

Discussion

The experiment postulates that the chemical reaction between Na3PO4·12 H2O and BaCl2·2 H2O leads to the formation of a heterogeneous mixture of unknown mass and composition. Therefore, adding water (H2O) in the unknown mass further leads to the formation of Ba3 (PO4)2. It further enhances the measurement of the new substance.

The study further indicates that chemical reaction between substances occurs within the range of fixed mole ratios. The net ionic equation helps in the determination of the reacting moles in a particular activity. The subsequent represents the net ionic equation.

2 PO43- + 3 Ba2+ → Ba3 (PO4)2(s)

The reaction suggests the formation of 2 moles of phosphate iron. The formation emanates from the 2 moles of Na3PO4·12H2O. The analysis further reveals that the Na3PO4·12H2O has a molar mass of 760.24g. The ionic equation further affirms the reaction of 3 moles of Barium. The 3 moles emanate from the 732.81g of BaCl2·2H2O. Besides, the successful completion of the reaction will lead to the formation of 1 mole of Ba3 (PO4)2 that is 601.93g.

The experiment reveals that the testing of the limiting reactant will help in the determination of the percent composition of the mixture of salt. Two tests will further help in the identification of the limiting reactant of the barium phosphate solid. A phosphate agent plays a crucial role in the determination of the amount of barium ions in the solution. The formation of a precipitate further reveals that existence of excess barium ions (Marin 20). The second test revolves around the use of a barium reagent to identify the existence of phosphate ions. The formation of a precipitate is an indicator of the excess phosphate ions. The subsequent calculation postulates the analysis of the data from the experiment.

Calculations

The calculation is required for the analysis of the data in this experiment. The study reveals that 0.188g of Ba3 (PO4)2 precipitate form from the 0.942g of the salt mixture. The analysis further reveals that the limiting reactant is BaCl2·2H2O. The reaction’s stoichiometry also shows that that 1 mole Ba3 (PO4)2 needs 3 moles Ba2+. The subsequent calculation postulates the number of BaCl2·2H2Og in the initial mixture that led to the production of 0.188 g Ba3 (PO4)2.

Computation 1: 0.188g Ba3 (PO4)2 x 1 mole Ba3 (PO4)2/601.93g Ba3(PO4)2 x 3 mole Ba2+/1 mole Ba3(PO4)2 = 9.37 x 10-4 mole Ba2+

9.37 x 10-4 mole Ba2+ x 1 mole BaCl2·2H2O/1 mole Ba2+ x 244g BaCl2·2H2O/1 mole BaCl2·2H2O = 0.228 g BaCl2·2H2O

Computation 2: The difference between the total mass of the original salt sample and the mass of the BaCl2·2H2O,

= (0.942 g – 0.229 g =) 0.713 g.

iii) The percent BaCl2·2H2O in the salt mixture is

= 0.229 g/0.942 g x 100 = 24.3% BaCl2·2H20

iii) The percent Na3PO4·12H2O in the salt mixture is 0.713 g/0.942 g x 100 = 75.7% Na3PO4·12H2O

 

Works Cited

Davis, Mark E, and Robert J. Davis. Fundamentals of Chemical Reaction Engineering. Mineola, N.Y: Dover Publications, 2012.

Marin, Guy B. Computational Fluid Dynamics. Amsterdam: Elsevier, 2006.

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Compare and Contrast Essay

Tuskegee University was an institution which trained only African Americans. It is the University which conducted one of the most controversial studies in healthcare in the last century. The study involved a review of syphilis progression and treatment. Although the condition was not treatable at the time, in the 1940s, the penicillin tests indicated that the drug could be useful in the treatment of the disease. Unfortunately, the researchers failed to inform the participants of the new cure, and they also studied them without informing them. They withheld treatment which would have saved the lives of these individuals.

Henrietta Lacks the institution used a woman whose cells were taken by an institution without informing her. Her cells were used for studies including cloning, gene mapping and other genetic studies (Miranda and David Jesse Sanchez 232). It is essential to note that most studies in cytology have been based on the analysis of genes from the woman commonly referred HeLa. Unfortunately, the whole process had happened without her consent, and she did not even know that her genes were so useful in science including her death.

The two cases have similarities and differences. One of the main similarities is that in both cases, the participants were not involved in making decisions. HeLa was not asked for her consent to have her genes taken by the researchers for any studies (Miranda and David Jesse Sanchez 232). It is notable that she remained in the dark until she died and there are no benefits that were received by her or her children despite the immense contributions her cells brought and continues to bring to medicine. Today, there are billions of genes cloned from her original cells, and they are used in healthcare, reaping profits for the researchers yet even her children do not have health care insurance (Njoku 286). In the Tuskegee research, the participants also did not benefit from the studies conducted on their bodies. Additionally, they were also not uninformed to give their consent, and neither were they involved in the decision making processes involving their conditions.

In yet another similarity between the two, the studies indicate that there was a blatant abuse of the African Americans in health care studies. In both cases, the participants were African Americans, and they were all involved in studies that they did not give consent to, and hence it proves bias in healthcare (Njoku 286). It is imperative to note that a conclusion may be made about the studies which could indicate that the individuals were used as lab animals. For instance, there are not differences in human genes, and a white person would have been used as the source of genes. However, they settled on the black person because of bias since it is the hierarchy they utilized in studies so that after tests had been successful in mice, they went to apes and a black person before they can use the studies positively on the white people. The same case applied to the black men studied for syphilis.

The main difference between the studies is that the Tuskegee study was later discontinued and it led to changes in the medical and clinical studies format yet the case of HeLa has not had any progress regarding finding justice for her and her family despite the benefits it has introduced in healthcare. It is also notable to see that he HeLa study continues to be beneficial to the world.

 

 

Works Cited

Miranda Jr, Daniel, and David Jesse Sanchez. “The Tuskegee Experiment: An Introduction in Ethics for Pre-Healthcare Professional Students.” Journal of microbiology & biology education 15.2 (2014): 232.

Njoku, Dolores B. “The Immortal Life of Henrietta Lacks.” Anesthesia & Analgesia 117.1 (2013): 286.

 

 

PERSUASIVE OUTLINE FOR SPEECH.

THE PRODUCT SPEECH

Please write an outline persuading the audience to buy a GoPro and follow the following guidelines:

You will persuade your audience (the class) to be interested/motivated to purchase a product based on the following criteria.

real (something we can see and touch)
legal
be able to purchase online or in a local store
current retail price- $50-100 US
not anything living, like a pet etc..
not a weapon of any kind
not a drug, alcohol etc
Nothing distasteful or potentially offensive to others
Pursuade the audience to support your product. Anticipate possible opposing responses.
Video editing and video stopping/pausing are NOT allowed.
INSTRUCTIONS

LENGTH – Your presentation will last from two – 1/2 minutes – four minutes. Any longer will reduce your grade.
ORGANIZATION – You will organize your presentation based on Monroes Motivated Sequence. See pp. 233 and 234 in your textbook. Be aware of possible opposing response(s)–reason(s) your audience may not follow the action you are requesting; acknowledge this, but return to the strengths of your proposal and be convincing (be persuasive!)–following many of the strategies presented in Chap. 14 (reread Chap 14). Use all three persuasion appeals effectively: Credibility, Logical, & Emotional. If you only talk about \”your\”product and do not give some fair consideration to other choices that may be available, then your persuasion will not be as convincing.
OUTLINE – You will turn in a complete sentence outline
REFERENCES – You should have at least three – four credible references in your bibliography.

Write a report about one of the following 1-Smart Government in Dubai. 2-How IT is helping a UAE company to achieve competitive advantage. 3-Challenges facing IT Project management. 4- knowledge economy as strategic goal for UAE. 5-how IT helped UAE ministry of labor to reengineer processes. 6-Strategic knowledge management in UAE. 7-challenges in mapping organization strategic goals with IT strategic goals in UAE companies.
Write a report about one of the following 1-Smart Government in Dubai. 2-How IT is helping a UAE company to achieve competitive advantage. 3-Challenges facing IT Project management. 4- knowledge economy as strategic goal for UAE. 5-how IT helped UAE ministry of labor to reengineer processes. 6-Strategic knowledge management in UAE. 7-challenges in mapping organization strategic goals with IT strategic goals in UAE companies.

1.Subject: A contemporary ethical issue

2.Topic: Students choice of one of the contemporary issues available on Opposing Viewpoints In Context database or in Current Issues (see Part Five Casebooks 505-652). Please select a topic that you are interested in exploring, not one that you have already written about. (Please do not write about abortion!)

3.Purpose: Argue a position regarding one of the issues available in our text or the database. The paper should be 7-10 pages in length and must include MLA style in-text citations and lead-ins or signal phrases for all quotes, paraphrases, and summaries. A Works Cited page is required. Students should include appropriate visual images (charts, tables, graphs, photos). Students must include citations (summaries and/or quotes) from at least five different print sources including Opposing Viewpoints articles.

4.Organization: The argument should follow the deductive or logical syllogism pattern (major premise/warrant, minor premise/support, absolute conclusion/claim). The major premise / warrant should articulate an appropriate moral principle like the Singer essay Famine, Affluence, and Morality. The major premise /warrant may include reservations and backing.
Instruction files

famine_affluence_and_morality.pdf(6,02 MiB)

The main motivation towards developing this business plan is the responsiveness towards offering people nutritious, well-prepared, and healthy foods with a fair price. This is a comprehensive business plan for a 100 seat fancy restaurant named Rooftop Restaurant; will provide all types and varieties of food to the customers. The operation of the business will be based in London, the most famous city in the world, whose people enjoy going to restaurants and eat food.

The implementation of the business plan of Rooftop Restaurant is discussed in details respectively in the following chapters of this report. The result of the feasibility study (qualitative and quantitative) along with the market analysis has provided a solid background in the preparation of this business model. This business has been presented with different sub sections with a view to reflect different aspects of the business and to ensure that the model has covered all the areas.

Please follow the content as it is in the attached file.

Please fill the form of research ethics as well that i have uploaded because i cannot fill it because you know what the Business plan is about is about.

Thank you a lot
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contents_business_plan.pdf(66,47 KiB)

PLEASE USE GOOD GRAMMAR-COMPLETE SENTENCES-PROOF READ!!

This write up should be like writing a memo to CEO of a company. The CEO is very familiar with the Simulation. The goal of the paper is to explain what you learned and how it relates to materials I provided. VERY IMPORTANT Please be sure to Give specific details of the results you obtained and alternatives you looked at while playing the simulation. Discuss why one decision is more appropriate than others.

-Add an Executive Summary AND conclusion
**SEE FURTHER INSTRUCTIONS IN CUSTOMER SUPPORT NOTES**
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game_theory_in_strategic_analyis.pdf(119,10 KiB)
implications_for_strategy_formulation.pdf(4,53 MiB)
resource-based_theory.pdf(487,25 KiB)
check_list_that_paper_is_done_correctly.doc(46,00 KiB)
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Thank you for your first attempt to this draft. The objective of this order/paper is to write about the experience of taking the simulations and the results you came up with. In addition, you apply your descriptive experience to the readings (sources) I have provided and answer the questions regarding the simulations results you came up with. PLEASE REWRITE THIS ENTIRE PAPER. NONE OF THE INFORMATION APPLIES TO THE INSTRUCTION. DO NOT USE ANY OF THE INFORMATION IN THE FIRST DRAFT. IT IS INCORRECT. **The paper is about writing to the CEO (use that language as you are writing a memo to your boss) about the simulation experience. TAKE THE SIMULATION MANY TIMES AND EACH TIME REMEMBER WHAT YOU SEE AND EXPERIENCED. **Rewrite the WHOLE paper. The analysis should be about the simulations and then answer the questions. YOU SHOULD TAKE THE SIMULATION MORE THAN ONE TIME. YOU ARE TO PROVIDE ALL THE DIFFERENCE EXPERIENCES YOU ENCOUNTERED WHEN YOU TOOK IT. **Apply the sources I provided and additional resources if applicable � PLEASE MAKE SURE YOU READ THEM ALL. **Executive Summary is missing. Please include it. ** Please REWRITE the Conclusion. The conclusion should mention about the experience in taking the simulation and incorporate it with the importance of managerial decision making and lesson learned. **Your citations and references are incorrect. I provided the correct references for you. -Schmitz. A. (2012a). Mastering Strategy: Art and Science. Retrieved from https://saylordotorg.github.io/text_mastering-strategic-management/s05-mastering-strategy-art-and-sci.html -Schmitz, A. (2012b). Evaluating the Industry. Retrieved from https://saylordotorg.github.io/text_mastering-strategic-management/s07-03-evaluating-the-industry.html **Use the Porter�s Five Forces as it applies to the simulations you taken. Please rewrite and answer Question 3 as it applies to the simulations results you see. **Rewrite Question 1 and 2 � as it should apply to the simulation experience and what you see. Provided different examples on what you see and experience. Explain it. Use data, calculations, etc. **Apply the sources/ readings I provided you as supported information. ** You don�t not have to apply the wealth asset management industry I requested. Do not include this reference Bessermer Trust. Please remove it. I look forward to your revise work. Thank you so much! 🙂

ttp://sffed-education.org/chairthefed/default.html
The link above will take you to the \”Fed Chairman Game.\” In this game, you are appointed as the Chair of the Board of Governors of the Federal Reserve by the President in order to implement monetary policy. The game will take you through a simulated economy and allow you to control the federal funds (interest) rate in pursuit of full employment and of price stability. The object of the game is to get appointed for another term. Read the game\’s instructions, and play at least two rounds of the game.

After playing, write a paper reflecting on the simulation and describing your experience (250 word minimum). Include the following items in your reflection paper:
1. Using the concepts you\’ve been studying, describe how the game shows the use of monetary policy?
2.How can unforeseen circumstances effect the economy? Give examples.
3.How does the Fed react to these circumstances? Did you get re-appointed? Why or why not?

Please write and submit this reflection as a doc or docx attachment using the submission link, which is the link for the assignment title above.

Tips: the concepts you\’ve been studying, describe how the game shows the use of monetary policy?
What is monetary policy? What is it trying to do? How does the game show this? How does the game NOT simulate the real thing? Try to analyze and illustrate but avoid a simple play-by-play description of your actions. Analyze and evaluate your actions instead.

How can unforeseen circumstances effect the economy? Give examples.
Tell us examples that you dealt with in the simulation; tell us examples from news of the real world, too. What do these examples do to the money supply?

How does the Fed react to these circumstances? Did you get re-appointed? Why or why not?
How does the Fed really react using all its actual tools for monetary policy, not just those in the game? If you had all the Fed\’s tools, what would you have done?