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It is desired to remove benzene from an aqueous waste stream at an industrial waste site that produces approximately 20,000 gallons of water per day with a pH of 5.3 and a benzene concentration of 2000μg/L. A batch adsorption system is to be used. A preliminary bench scale analysis was conducted to get the adsorption data of benzene on two types of carbons (I and II) at pH 5.3. The data are given below:
(i) Which isotherm (Freundlich or Langmuir) would better represent the data?
(ii) What is the maximum adsorption capacity of carbon I and II?
(iii) If the effluent water quality for benzene is 20μg/L, how much of carbon would be required per day? Which carbon type would you recommend?
If the United States imposes a tariff of $3 per pound, what will be the U.S. price and level of imports? How much revenue will the government earn from the tariff? How large is the deadweight loss?
a. State the per worker production function b. Given that (A = 4) the savings rate is 0.3, the population grows at 0.01 and the depreciation rate is 0.05. Calculate the steady state capital stock per worker and investment per worker.
Where PX is price of donut; PC is price of coffee; M1 is Ross's income; M2 is Jennifer's income. Suppose Price of coffee is $10, Ross's total income is $1000 and Jennifer's total income is $2000. A) Find market demand function for donuts. If marke..
You bought a car for $16,000 including sales tax and cost of the title. You agreed to pay 60 equal monthly payments to pay for the car at 6% annual interest compounded monthly. The dealer charged you $350/month. You thought that this is a bit more..
the demand curve and supply curve for a one-year discount bonds with a face value of 1000 are represented by the
A baseball manufacturer is currently producing 10,000 baseballs. At this level of production, MC is estimated at $2.50 and average cost at $2.00. Baseballs sell for $3.00 at this production level, and marginal revenue is $2.25.
Why are health and education so closely linked in the development challenge? What are the most pressing health and education challenges today? What makes them so difficult to solve?
Principles Of Economics - Compute the Cost. Edward the entrepreneur takes 2 hours to cut a lawn and he cuts 100 lawns per year. He uses solar-powered equipment.
Assume now that the coin is tossed until we obtain a tail that is immediately preceded by a head. Find the PMF and the expected value of the number of tosses.
A student taking economics, statistics, and finance has decided to spend 9 hours per week studying. The objective is to maximize the average grade, which means maximizing the total grade in the three courses.
Suppose that the local gym has a marginal and average cost of 10 per visit. Calculate the profits associated with the following combinations of annual fee (T) and per visit fee (P), and determine which scheme generates the highest profit.
Prove Theorem 7.2, paying particular attention to constructing feasible variations that ensure x(t1, ε) = x1 for all ε in some neighborhood of 0. What happens if there are no such feasible variations?
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