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A tower, 15 cm in diameter, is to be used to lower the ammonia, NH3, concentration in a gas stream from 3.6 to 0.3 mol %. Water is fed to the top of the tower at a rate of 14.5 mol/s and the gas stream is fed to the bottom at a rate of 8 mol/s.
The tower operates isothermally at 293 K and 1.013 × 105 Pa. The overall mass-transfer capacity coefficient, KY a, may be assumed to equal 71 mol/m2.s: DYA. The equilibrium data at 293 K are as follows:
Evaluate
a. the ratio (Ls/Gs)actual to (Ls/Gs)minimum.
b. the height of tower required, by graphical integration.
You are valuing an investment that will pay you $26,000 per year for the first 9 years, $34,000 per year for the next 11 years, and $47,000 per year the following 14 years (all payments are at the end of each year). The relevant interest rate is 9.00..
Use the needs approach method to calculate how much life insurance is needed for Jackie, who receives $50,000 gross income, and pays $8,000 in taxes and deductions.
Sprockets sell for $5 and have fixed costs of $1 million per year and variable costs of $2 per sprocket. What is the minimum number of sprockets the company must manufacture annually to not lose money? Solve using excel functions.
A 6.40 percent coupon bond with 28 years left to maturity can be called in nine years.- What is the yield to call of the bond?
You intend to hedge a floating rate payment on a $50 Million notional with a reset date of 3/18/16 and payment date of 6/20/16. The interest rate of the payment will equal 3-month libor as of 3/18/16. You short 50 EDH7 contracts at 99.25. What is you..
Consider a binomial model S(0) = 100 and r = .01 and two possible return values m1 = .05 and m2 = −.03. Find the (time 0) value of a European call with expiry time at step 5 and strike price X = 105. Find the (time 0) value of a European put with exp..
Considering the risk around the cost point estimate, what type of contract will generally be used for the contracted effort?
Tyler Company purchased a machine 3 years ago at a cost of $150,000. It had an expected life of 10 years at the time of purchase and an expected salvage value of $5,000. The firm has an Actual Collection Period of 63 days and pays its bills after 25 ..
A homeowner took out a 25-year, fixed-rate mortgage of $300,000. The mortgage was taken out 10 years ago at a rate of 6.20 percent. If the homeowner refinances, the charges will be $3,500. What is the highest interest rate at which it would be benefi..
J & B Corp. is investing in a major capital budgeting project that will require the expenditure of $20 million. The money will be raised by issuing $5 million of bonds, $3 million of preferred stock, and $12 million of common stock.
B&B Inc. has a book value of debt of $500,000. The market value of debt is $550,000. Its pre-tax cost of debt is 10%, and its beta is equal to 2. The tax rate is 40%. The firm has an annual EBIT of $200,000. What is B&B’s weighted average cost of cap..
The current price of a stock is $21. In 1 year, the price will be either $27 or $15. The annual risk-free rate is 6%. Find the price of a call option on the stock that has a strike price is of $25 and that expires in 1 year. The current price of a st..
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