11)

What are the coefficients in front of NO₃^-(aq) and Cu(s) when the following redox equation is balanced in an acidic solution:
___ NO₃^-(aq) + ___ Cu(s) → ___ NO(g) + ___ Cu²⁺(aq)?

Select one:

A. 3, 6

B. 2, 6

C. 2, 3

D. 3, 4

12)

The values of ΔH°_f for the three states of benzene are approximately -22 kcal/mol, -11 kcal/mol, and 20kcal/mol. Which is the value for solid benzene?

Select one:

A. -22 kcal/mol

B. 20 kcal/mol

C. -11 kcal/mol

D. cannot be determined without additional information

13)

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl₄(l) from 35.0°C to gaseous CCl₄ 76.8°C (the normal boiling point for CCl₄)? The specific heat of CCl₄(l) is 0.857J/gC its heat of fusion is 3.27kj/mol and its heat of vaporization is 29.82kJ/mol.

Select one:

A. 1.43 kJ

B. 6.28 kJ

C. 5.74 kJ

D. 0.896 kJ

18)

When heated, mercury(II) oxide decomposes into elemental mercury and oxygen:
2 HgO(s) → 2 Hg(l) + O₂(g) ΔH° = 181.6 kJ ΔS° = 216.4 J/K
Estimate the temperature at which HgO should begin to decompose if the partial pressure of O₂(g) is constant at 1.00 atm.

Select one:

A. 840°C

B. -34.8°C

C. 34.8°C

D. 566°C

19)

When 50.0 mL of 0.400 M Ca(NO₃)₂ is added to 50.0 mL of 0.800 M NaF, CaF₂ precipitates, as shown in the net ionic equation below. The initial temperature of both solutions is 25.00°C. Assuming that the reaction goes to completion, and that the resulting solution has a mass of 100.00 g and a specific heat of calculate the final temperature of the solution.
Ca²⁺(aq) + 2 F^-(aq) → CaF₂(s) ΔH° = -11.5 kJ

Select one:

A. 24.45°C

B. 26.10°C

C. 26.65°C

D. 25.55°C

Chuck Wagon Grills, Inc., makes a single product—a handmade specialty barbecue grill that it sells for $200. Data for last year’s operations follow:

Required:

1. Assume that the company uses variable costing. Compute the unit product cost for one barbecue grill.

2. Assume that the company uses variable costing. Prepare a contribution format income statement for last year.

3. What is the company’s break-even point in terms of the number of barbecue grills sold?

Show how the “Law of Cosines” derives from finding the magnitude of the difference of two vectors. As a consequence, show that if two vectors are perpendicular – then the law of cosines becomes the Pythagorean theorem.

Write a python program that uses a conditional loop to ask the user for distance and gallons and calculates the MPG. The program should store data in a text file as shown below: Distance Gallons MPG 225 17 13.24 1374 64 21.47 2514 79 31.82

Due to Coronavirus describe the financial impact of this Pandemic on the health care setting and how the Healths Care administrator will manage the budget with this new inquired.

In order to get a good rating, please explain how you arrived at each answer. Thank you.

P. 9-1

Enterprise funds are accounted for like comparable businesses; nevertheless, they have their quirks.

The Green Hills Water District was established on January 1 to provide water service to a suburban development. It accounts for its operations in a single enterprise fund. During the year it engaged in the following transactions:

1. It issued $6,000,000 of revenue bonds.
2. For $4,500,000, it purchased the plant and equipment of the private water company that previously served the area.
3. It incurred $500,000 in costs to improve and expand its plant and equipment.
4. It billed customers for $1.8 million, of which it collected $1.5 million.
5. It billed and collected $200,000 in tap connection fees from developers. The actual cost of the hookups (paid in cash) was $140,000.
6. It incurred the following operating costs (all paid in cash):

• Purchases of water, $850,000
• Labor and contract services, $320,000
• Interest, $80,00
• Supplies and miscellaneous, $60,000

7. It recognized depreciation of $350,000 on its capital assets.

1. Prepare journal entries to record the transactions.
2. Prepare a year-end statement of revenues, expenses, and changes in net position.
3. Prepare a year-end balance sheet.
4. In some jurisdictions, water districts may account for their operations entirely in an enterprise fund or in several funds, as if they were full-service governments. If a water district chose the latter, then it would report all revenues and operating expenditures in its general fund, and it would maintain other funds as appropriate. Describe briefly how the financial statements of the Green Hills Water District would differ if it chose to prepare its financial statements as if it were a full-service government. Be specific (note changes in capital assets, long-term debt, etc.).

Does it still make sense to you to start counting people as either in or out of the labor force at 16 years old, or do you think this age is unrealistic in our modern society?

You are handed a rod that is three times as dense on one end as it is on the other end. Find the moment of inertia when the axis of rotation is about the heavy end, and find the moment of inertia when the axis of rotation is about the light end.

A 1025 car and a 2150 pickup truck approach a curve on the expressway that has a radius of 246 m. At what angle should the highway engineer bank this curve so that vehicles traveling at 71.9 mph can safely round it regardless of the condition of their tires? Should the heavy truck go slower than the lighter car? As the car rounds the curve at 71.9 mph, find the normal force on the car due to the highway surface. As the truck rounds the curve at 71.9 mph, find the normal force on the truck due to the highway surface.

Physical chemistry

. The osmotic of an aqueous solution at 351 K is 94 kPa and a density of 1,152 g/mL. Calculate the freezing point (in C) of the solution. The Kf for water is 1.86oC/m.

True or False. Explain Briefly.

(9). If L₁ and L₂ are not in D, then L₁ - L₂ cannot be regular.

(10). If L₁ and L₂ are not in D, then L₁ union L₂ cannot be in D.

(11). Every infinite language has a subset that is not in D.

(12). If not H were in D then every SD language would be in D.

Write a case study involving a bacterial infection of the circulatory and lymphatic system. Identify the causative organism, name of disease, and put any relevant symptoms in ALL CAPS.

Step 1:

Perform research to find at least two articles on the following topic: “The effects of climate change on polar bear populations”. You must find one article based on primary research and one based on secondary research. After reviewing the articles, recreate and complete the table below which you will submit for feedback.

Step 2:

Write a 1-paragraph summary of the comparison. Which one is the primary source? How are primary and secondary sources different from each other? Similar to each other? How can you tell which is which? You will submit this paragraph for feedback.

How did Franklin Roosevelt seek to pull the U.S. out of the Great Depression? To what extent did his policies work?

1. How did Hubble show the nebulae are separate island universes?
2. Which types of galaxies have the large amount of star formation, spirals or ellipticals? Why is this the case?
3. What is the evidence for black holes in the centers of galaxies?
4. If H=70km/s/Mpc and a galaxy is receding at 10000 km/s, how far away is it? Show your work.
5. Why do we see only bright spirals and ellipticals in distant clusters of galaxies? Is this really all the galaxies in these clusters?