1.   The mass of a liquid is 200 cg and its volume is 50 cm3. Report its density in g/mL.

2.   The specific heat of copper is 0.093 cal/g °C and the specific heat of silver is 0.057 cal/g °C. If 200 cal of heat is added to 1g of each, which of them will have a higher temperature?
3.   Calculate the heat energy evolved when 5.46 g of water rises in temperature from 25 °C to 74 °C. (the specific heat capacity of water is 4.18 J/g °C)
4.   A 0.9% NaCl solution and a 5% glucose solution are isotonic to the cells of the body. State any changes that would occur, if a red blood cell was place in a 7% NaCl solution and explain why.
5.   What is the relationship between the concentration of a base and its alkalinity/basicity?
6.   Calculate the pH of a solution that has a pOH of 12. What is the [H+]?
7.   Calculate the [H+] of a solution with a pH of 4.7. Is this substance acidic or basic?
8.   What is the pH of a solution with [OH-] of 2.35 × 10-5?
9.   What is the pH of a solution with [H+] = 3.62 × 10-4?
10.   pH + pOH =

The Rockwell hardness of a metal is determined by impressing a hardened point into the surface of the metal and then measuring the depth of penetration of the point. Suppose the Rockwell hardness of a particular alloy is normally distributed with mean 71 and standard deviation 3.

a)If a specimen is acceptable only if its hardness is between 70 and 74, what is the probability that a randomly chosen specimen has an acceptable hardness? (Round your answer to four decimal places.)

b) If the acceptable range of hardness is (71 − c, 71 + c), for what value of c would 95% of all specimens have acceptable hardness? (Round your answer to two decimal places.)

c) If the acceptable range is as in part (a) and the hardness of each of ten randomly selected specimens is independently determined, what is the expected number of acceptable specimens among the ten? (Round your answer to two decimal places.)
d)What is the probability that at most eight of ten independently selected specimens have a hardness of less than 73.52? [Hint: Y = the number among the ten specimens with hardness less than 73.52 is a binomial variable; what is p?] (Round your answer to four decimal places.)

Labour As A Resource Market

Questions

1. Explain the difference between direct demand and derived demand.

2. Why would a firm seek to equate its marginal revenue product of labour (MRPL) with the market wage rate?

3. Explain what the term productivity means and why an improvement in productivity shifts the demand curve for labour.

4. What is the opportunity cost of someone offering his or her labour skills in the workplace?

5. Summarize the factors that can influence the labour supply curve.

An account balance is:

a.The total of the credit side of the account.

b. The total of the debit side of the account.

c. The difference between the total debits and total credits for an account including the beginning balance.

d. Assets = liabilities + equity.

e. Always a credit.

2. debit is used to record which of the following:

a. A decrease in an asset account.

b. A decrease in an expense account.

c. An increase in a revenue account.

d. An increase in the common stock account.

e. An increase in the dividends account.

the The Polynesian Urbanization Authority (PUA) buys new computuers for $100,000 in May. They estimate annual revenue will be from $50,000 to $400,000, but most likely about $300,000 over the next 5 years.

Operating and Maintenance costs will remain constant at $75,000/year. Their MARR-9%

Inflation is a constant 2.1%

1- What is the present work of PUA's ATCF, adjusted for inflations?

2- What is the EUAW(including inflation) of the present worth of the difference between PUAs expected BTCF and ATCF for the next 5 years?

According to the Internal Revenue Service (IRS), the chances of your tax return being audited are about 6 in 1,000 if your income is less than $50,000; 10 in 1,000 if your income is between $50,000 and $99,999; and 49 in 1,000 if your income is $100,000 or more (Statistical Abstract of the United States: 1995).

If two taxpayers with incomes under $50,000 are randomly selected and two with incomes more than $100,000 are randomly selected, what is the probability that none of these taxpayers will be audited by the IRS?

• Identify four methods of assigning a cost to ending inventory and cost of goods sold and briefly explain the difference in the methods.
  
• It’s common in the electronics industry for unit costs of raw materials inventories to decline over time. In this environment, explain the difference between LIFO and FIFO, in terms of the effect on income and financial position. Assume that inventory quantities remain the same for the period.
  
• Explain why proponents of LIFO argue that it provides a better match of revenue and expenses. In what situation would it not provide a better match?

Draw the MR, MC, AVC, ATC, Demand, supply, MC and MR for the following situations. For each of these situations show the total revenue, total cost area, and shade the profit or loss area, and if the situation is a shut down state why it should shutdown.

a.A monopolist showing a profit

b.A monopolist showing a loss but not a shut-down

c.A monopolist at a break-even point

d.Difference between a monopolist and a perfectly competitive firm for a profit situation on the same graph space.

• When a seller decides to change his price for a particular good, will quantity demanded change drastically? And what will happen to the total revenue, will it increase or fall?

•Will individuals form teams or firms in all settings?

•Economic profit is usually lower than accounting profit. A firm that makes zero economic profit is said to be earning normal profit. Is zero economic profit bad for a firm?

•Discuss the difference between monopolistic competition and oligopoly.

•What makes it rare for an industry to be in a perfect competition setting?

CPAs and accountants are trained to understand the Internal Revenue Code and reference the regulations to get further guidance. Discuss what other services you can use to get more information and updates about the tax issues affecting your clients. What can small businesses do to keep up with the constantly changing tax laws? Where do you draw the line between what business owners need to know and what they should rely on their tax advisor to keep track of?