Determine the pH change when 0.093 mol HCl is added to 1.00 L of a buffer solution that is 0.497 M in HNO₂ and 0.311 M in NO₂^-.

pH after addition − pH before addition = pH change = ___________________

Determine the pH change when 0.115 mol KOH is added to 1.00 L of a buffer solution that is 0.457 M in HNO₂ and 0.256 M in NO₂^-.

pH after addition − pH before addition = pH change =_____________

show what happens if Islandia opens up to international trade and finds out that the world price for textiles is lower than the domestic price.

•Draw the diagram, labelling carefully and accurately and showing quantities before and after and amount of exports or imports

•Show a table with Consumer Surplus, Producer Surplus, Total Surplus and the ∆ both before trade and after trade

•State what happens to producers and consumers in terms of being better or worse off

Cost of debt using both methods​ (YTM and the approximation​ formula) Currently, Warren Industries can sell 20-year​, ​$1,000​-par-value bonds paying annual interest at a 11% coupon rate. Because current market rates for similar bonds are just under 14​%, Warren can sell its bonds for ​$960 each; Warren will incur flotation costs of ​$35 per bond. The firm is in the 28% tax bracket.

A. Find the net proceeds from the sale of the​ bond, Upper N Subscript dNd.

B. Calculate the​ bond's yield to maturity (YTM​) to estimate the​ before-tax and​ after-tax costs of debt.

C. Use the approximation formula to estimate the​ before-tax and​ after-tax costs of debt.

------------------------------------------------

A. The net proceeds from the sale of the​ bond, Upper Nd​, is ​$____. (Round to the nearest​ dollar.)

B. Using the​ bond's YTM, the​ before-tax cost of debt is ____%. ​(Round to two decimal​ places.)

Using the​ bond's YTM, the​ after-tax cost of debt is _____​%. ​(Round to two decimal​ places.)

C. Using the approximation​ formula, the before-tax cost of debt is ______​%. ​(Round to two decimal​ places.)

Using the approximation​ formula, the after-tax cost of debt is _____%​(Round to two decimal​ places.)

The Deepwater Horizon oil spill (also referred to as the BP oil disaster) is an industrial disaster that began on 20 April 2010, in the Gulf of Mexico on the BP-operated Macondo Prospect, considered to be the largest marine oil spill in the history of the petroleum industry. The U.S. government estimated the total discharge at 4.9 million barrels. How do you expect BP to account for this disaster in its 2010 financial statements?

Mental health. The 2010 General Social Survey asked the question: “For how many days during the past 30 days was your mental health, which includes stress, depression, and problems with emotions, not good?” Based on responses from 1,151 US residents, the survey reported a 95% confidence interval of 3.40 to 4.24 days in 2010.

(a) Interpret this interval in context of the data.

(b) What does “95% confident” mean? Explain in the context of the application.

(c) Suppose the researchers think a 99% confidence level would be more appropriate for this

Interval. Will this new interval be smaller or larger than the 95% confidence interval?

(d) If a new survey were to be done with 500 Americans, would the standard error of the estimate be larger, smaller, or about the same. Assume the standard deviation has remained constant since 2010.

1. On January 1 2010, J Company lends M Company $20,000 with payment due in 5 years. J Company calculates that present value of the $20,000 is $13,612.

Required:

a) Prepare the journal entry for J Company on January 1, 2010.

b) Prepare an effective interest amortization table with 4 columns for J Company.

c) Prepare the journal entries for J Company on 31 December 2010, 2011, 2012, 2013, 2014 and 2015. Assume that M Companies repays J Company promptly. 2. Repeat all the requirements in question 1 above if the note has a stated rate of 6% per annum. 3. Repeat all the requirements in question 1 above if the note has a stated rate of 10% per annum.

More time on the Internet: A researcher polled a sample of 1052 adults in the year 2010, asking them how many hours per week they spent on the Internet. The sample mean was 10.19 with a standard deviation of 13.8 A second sample of 2022 adults was taken in the year 2012. For this sample, the mean was 10.87 with a standard deviation of 14.92. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per week spent on the Internet increased between 2010 and 2012? Use the α = 0.01 level of significance.

1. State the null and alternative hypothesis

2. Compute the p-value and Testing Value

3. Do you reject the null hypothesis? Explain?

4. Can you conclude that the mean number of hours per week spent on the Internet increased between 2010 and 2012?

Thomsonetics, Inc., a rapidly growing early-stage technology company, had the pretax income noted below for calendar years 2010-2012. The firm was subject to corporate taxes consistent with the rates shown in Table 2.6.

Year: Pretax Income:
2010 $87,000  
2011 $312,000
2012 $760,000

a. Calculate Thomsonetics' tax liability for each year 2010, 2011, and 2012.

b. What was the firm's average tax rate in each year?

c. What was the firm's marginal tax rate in each year?

TABLE 2.6

Taxable Income Over: Not Over: Tax Rate:
$0 $50,000 15%
50,000 75,000 25%
75,000 100,000 34%
100,000 335,000 39%
335,000 10,000,000 34%
10,000,000 15,000,000 35%
15,000,000 18,333,333 38%
18,333,333 ................. 35%

Purchases Budget in Units and Dollars
Budgeted sales of The Music Shop for the first six months of 2010 are as follows:

Beginning inventory for 2010 is 50,000 units. The budgeted inventory at the end of a month is 40 percent of units to be sold the following month. Purchase price per unit is $7.

Prepare a purchases budget in units and dollars for each month, January through May.

Stocks for Fumbeshi and Mundashi have the following historical returns: Table 2 Year Fumbeshi Mundashi 2010 -18% -14.5% 2011 33% 21.8% 2012 15% 30.5% 2013 -0.5% -7.6% 2015 27% 26.3% (i) What is the average return rate of return for each stock during the period 2010 through 2015? (ii) Assuming someone held a portfolio consisting of 50 percent of stocks Fumbeshi and 50 percent stocks of Mundashi, what would have been the realized return on the portfolio during this period? (iii) What is the standard deviation of each stock during the period 2010 through 2015? (iv) Which of the stocks Fumbeshi or Mundashi performed better in terms of both the risk and return? (Hint: Back your answer with computations) Total