Chemistry Questions regarding enthalpy and equilibrium

Question 1 :

The standard enthalpies of formation, at 25.00 oC, of methanol (CH4O(l)), water (H2O(l)), and carbon dioxide (CO2(g)) are, respectively, -238.7 kJ/mol, -285.8 kJ/mol, and -393.5 kJ/mol. Calculate the change in the entropy of the surroundings (in J/K) upon the combustion of 15.1 g of methanol under a constant pressure of 1.000 atm and a temperature of 25.00 oC. N.B. combustion is the reaction of this substance with molecular oxygen to produce water and carbon dioxide.

Question 2 :
At 25oC, the equilibrium constant for the reaction 2 A(aq) —-> B(aq) + C(aq) is 2.20 . If the concentration of B(aq) is 0.333 M and the concentration of C(aq) is 0.537 M, what would be the minimal concentration of A(aq) (in mol/L) required to make the reaction spontaneous?

Question 3 :
For the reaction A(aq) + B(aq) <—> C(aq) + D(aq), the equilibrium constant is 23.7 at 25oC and 35.0 at 50oC. What is the value of the standard Gibbs free energy change (in kJ) of this reaction at 75oC?


Question 4 :
We have a solution that has a concentration of 0.362 M for A(aq) and 0.650 M for B(aq). There are no other solutes initially. The reaction 2 A(aq) + B(aq) <—> 2 C(aq) + D(aq) takes place. At equilibrium, the concentration of C(aq) is 0.127 M. What is the equilibrium constant of this reaction?

Question 5 :
For the reaction 2 A(aq) <—> B(aq) + C(aq), the standard Gibbs free enthalpy change is 1.64 kJ at 25oC. The initial concentration of A(aq) is 0.555 M, the initial concentration of B(aq) is 0.301 M, and the initial concentration of C(aq) is 0.243 M. What would be the concentration of A(aq) (in mol/L) once we attain equilibrium (we are still at 25oC)?

Question 6 :
We start with a pure sample of A(g). The following equilibrium is established:

2 A(g) <—> B(g) + C(g)

The total pressure is 8.40 atm and the temperature is 25.0oC. The partial pressure of A(g) is 5.06 atm. Calculate the value of the standard Gibbs free enthalphy change (in kJ) for this reaction at 25.0oC.

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Blog entry 1-2 paragraphs – Lion Essays

You are tasked with writing a blog post discussing Facebook’s stance on consumer privacy in the digital age. Additionally, you must comment on at least one of your peers’ blogs. Demonstrate your knowledge by using concepts presented in Chapter 15. Note: Review pages 342-345 in particular.

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Assignment 2: Using Your Manager Skills

Assignment 2: Using Your Manager Skills

Note: The companies mentioned herein are merely hypothetical organizations with characteristics developed to enable students to respond to the assignment. You may create and / or make all necessary assumptions needed for the completion of this assignment.

In this assignment, you, in the role of a risk manager at Simply Green Products, will draft a document that is commonly used in the business world—a memorandum to your boss.

Simply Green Products is a $10 million company that produces biodegradable packing materials that orchards use in the Shenandoah Valley to transport their apples, peaches, and pears nationwide. Biodegradable materials are more eco-friendly because they break down into the environment. Such packing materials are marketed under the name “SafePack,” which is heavily advertised in trade journals. Simply Green Products have had the name “SafePack” imprinted on all of their packing material since 2008; however, they never filed for either state or federal trademark protection. With the movement toward more eco-friendly agricultural production, the fact that such packing materials are biodegradable provides a primary marketing advantage over non-biodegradable competitors.

The company president, Shep Howard, has recently become aware of several issues that may require referral to the company’s outside counsel. Because you serve as the company’s risk manager, Howard has asked you to leverage your legal and managerial skills to draft a memorandum that addresses one (1) of the two (2) situations described below:

  • An environmental group is asserting that SafePack materials are not biodegradable. In fact, the group claims that these materials are causing an environmental hazard that is seeping from a local landfill into a nearby stream. An environmental group, SafePack Materials Pollute, has sprung up and launched an Internet campaign geared toward compelling fruit producers to stop purchasing your packing materials. The situation at hand raises environmental issues that relate to the Clean Water Act and the Solid Waste Disposal Act.
  • A company called Safe Choices, Inc. has accused Simply Green Products of trademark infringement, and has sent a cease and desist letter to President Howard, demanding that Simply Green Products stop using the name “SafePack”. The letter asserts that a) Safe Choices uses the SafePack name to market an emergency weather kit in the form of a backpack; and that b) Safe Choices had received a federal registration for the mark from the Patent and Trademark Office in 2002. This backpack is sold both online at safepack.com and in sporting goods stores nationwide. The letter goes on to suggest that Simply Green Product’s use of this name “constitutes a false designation of origin which is likely to confuse customers as to the source of the goods”. The intellectual property issue at hand involves the Lanham Act.

For one (1) of the two (2) situations set out above, write a three to four (3-4) page memorandum to President Howard. Ensure that you address each of the questions below within your memo so that President Howard may assess whether or not Simply Green Products needs to by SaveItCoupons” style=”border: none !important; display: inline-block !important; text-indent: 0px !important; float: none !important; font-weight: bold !important; height: auto !important; margin: 0px !important; min-height: 0px !important; min-width: 0px !important; padding: 0px !important; text-transform: uppercase !important; text-decoration: underline !important; vertical-align: baseline !important; width: auto !important; background: transparent !important;”>hire outside counsel to address the matter at hand.

  1. Discuss the elements that must be present in order for one to prove a valid claim under the law(s) specified (i.e., the Clean Water Act, the Solid Waste Disposal Act, or the Lanham Act).
  2. Determine whether or not the activity of Simply Green Products amounts to a violation of the applicable law (i.e., the Clean Water Act, the Solid Waste Disposal Act, or the Lanham Act). If you chose the environmental issue, determine whether or not seepage from your products into a stream would violate the Clean Water Act, the Solid Waste Disposal Act, or both. Explain your rationale. If you chose the intellectual property matter, determine whether or not by SaveItCoupons” style=”border: none !important; display: inline-block !important; text-indent: 0px !important; float: none !important; font-weight: bold !important; height: auto !important; margin: 0px !important; min-height: 0px !important; min-width: 0px !important; padding: 0px !important; text-transform: uppercase !important; text-decoration: underline !important; vertical-align: baseline !important; width: auto !important; background: transparent !important;”>continued use of the SafePack name by your company would violate the Lanham Act. Explain your rationale.
  3. Decide whether or not President Howard should refer this chosen matter to the company’s outside counsel. Provide a rationale for your decision.
  4. Use at least three (3) high-quality academic references. As the cases discussed within the assignment are hypothetical, you will not find any solutions to them on the Internet. Further, note that Wikipedia, blogs, and such Websites as Free Dictionary do not qualify as academic resources, whereas your textbook does. Use the Strayer Learning Resource Center (LRC) to locate high-quality academic references.

Your assignment must follow these formatting requirements:

  • Include a cover page containing the title of the assignment, your name, the professor’s name, the course title, and the date.
  • Draft this in the form of a letter that is typed, double-spaced, and uses Times New Roman font (size 12) with one-inch margins on all sides.
  • Include your citations in the body of your letter and include your list of references at the end. All citations must follow the APA.
  • Be sure to follow all additional instructions provided by your professor.

The specific course learning outcomes associated with this assignment are:

  • Describe the legal environment of business, the sources of American law, and the basis of authority for government to regulate business.
  • Use technology and information resources to research issues in business law.
  • Write clearly and concisely about business law using proper writing mechanics.

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psyc 3005 3-4 pages, apa format

  • Describe the concerns held by both adoptive parents and adopted children in transracial families.
  • What other concerns would you add that were not discussed and why?
  • Explain how the concerns you discussed in the first two questions relate to the concept of double consciousness.
  • Discuss the advantages and disadvantages of race and ethnicity covering and passing.
  • Address how covering and passing can be used to both cause and resolve identity conflicts for both transracial adoptees and in general.

 

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