1.Water was used as a negative control. If you had observed the water change in color from clear to red after adding Benedict's solution and then heating to 100 ^oC, what could you conclude?

A.The water was contaminated with glucose.

B.The Benedict's solution was contaminated with glucose.

C.The Benedict's solution was contaminated with sucrose.

D.The water was contaminated with sucrose.

2. Glucose was used as a positive control . If you had NOT observed the glucose solution change in color to red after adding Benedict's solution and then heating to 100 ^oC, what could explain this result? Select ALL correct answers.

A.The concentration of glucose was too high.

B.The Benedict's solution was no longer working as intended.

C.The temperature probe was broken and the water bath was actually 50 ^oC

D.The glucose solution had been contaminated with ribose.

4. If you expect the unknown acid molarities to be between 0.010 M and 0.20 M and the sodium hydroxide solution to be 0.050 M, what volume of unknown acid solution would you place into the flask? State your reasoning or assumptions that you make (perhaps typical of those given in question 3, perhaps not) and show your calculation.

Bonus. State two possible errors when using burets that would reduce the accuracy of your titration. Explain specifically whether the result would be a calculated acid molarity that is smaller than the actual value or a calculated acid molarity that is larger than the actual value.

There are 5 black balls and 9 red balls in an urn. If 4 balls are drawn without replacement, what is the probability that exactly 3 black balls are drawn? Express your answer as a fraction or a decimal number rounded to four decimal places.

There are 8 black balls and 6 red balls in an urn. If 4 balls are drawn without replacement, what is the probability that at least 3 black balls are drawn? Express your answer as a fraction or a decimal number rounded to four decimal places.

The Prairie Island nuclear power plant near Red Wing, Minnesota, produces about 2×10⁹watts. A watt is one Joule per second.

b. Calculate the Joules of energy produced by the Prairie Island plant in one day.

c. Recall that E = m c². Use E from part b. Calculate m, the minimum mass that was converted to energy in one day. (Because of inefficiency, the actual mass converted must be larger.)

d. During fission of U-235, 0.1% of uranium's mass is converted to energy.  What mass of U-235 is required for the mass loss you calculated in part c?

e.  Combustion of bituminous coal produces 30 kJ/g (Chemistry in Context Table 5.2). That is heat, not electrical power, but ignore inefficiency and suppose that all the heat is converted to electrical energy. What mass of coal will produce the daily energy calculated in part b?

The network Manager is seen the arm of the operating system responsible for providing services such as user accounts, resource security, and mechanisms used to implement communication between computers. In not less than four (4) pages, Discuss in detail, the concept of resource management by the operating system and explain in detail the role played by the network manager, as well as the two (2) major challenges

1. I propose to you the following gamble: I flip a fair coin, and if it is heads, I give you $5. If it is tails, you give me $6. What is the expected value of this gamble?

2. So you correctly surmised that question 1 was a bad gamble. How about the following? You have a utility function of U = X0.5, where X is your wealth. You currently have $100. I propose this fair coin flip: If it comes up heads, I give you $101, raising your wealth to $201. If it comes up tails, you give me your $100, lowering your wealth to 0. Do you take the bet? Explain, including a discussion of the fact that the EV of this bet is positive.

3. Use words to describe the concept of certainty equivalent.

4. What do you think about prospect theory? Significant improvement on expected utility? Or just some people have weird attitudes towards risk, and risky outcomes?

19. Make a graph showing the spending and tax revenue of your satate government for as many years as you can find (use the government of your home country if you are not from the United States).

a. What trends do you notice?

b. What spending categories make up the largest share of the state budget?

c. What are the largest sources of revenue?

One of your corporate clients has Section 541 personal holding company income in addition to ordinary income and has not distributed this income to its shareholders. You explain to the company's owner that, because the income is undistributed, the corporation will be subject to:
A. deduction limitations
B. the ordinary corporate income tax.
C. carryover of excess income.
D. a special tax penalty.

Assume that you have two cylindrical steel samples with 1 in diameter, one made out of AISI 1045 and another one made out of AISI 4140. You austenitize and quench both samples in oil. Then you cut a section and measure the hardness at the center of each sample. Would you expect to get the same results? Explain your answer.