Write the mass balance equation, Macroeconomics

Environmental engineers and scientists are becoming concerned about pharmaceuticals in the environment. An antibiotic is discharged into a small lake at an influent concentration of 0.05 mg/L. The lake has a surface area of 1.5 acres and a mean depth of 6 feet. The flow into the river is 100 cubic feet per second (cfs). The antibiotic is degraded naturally in the lake with a first-order rate constant of 0.003 s-1.

A. What kind of hydrodynamic model should you use for a small lake?

B. Write the mass balance equation in words.

C. Write the mass balance equation for the antibiotic in symbols at steady state. Define your symbols.

D. What is the antibiotic concentration in a river draining the lake at steady state?

 

Posted Date: 3/19/2013 4:03:42 AM | Location : United States







Related Discussions:- Write the mass balance equation, Assignment Help, Ask Question on Write the mass balance equation, Get Answer, Expert's Help, Write the mass balance equation Discussions

Write discussion on Write the mass balance equation
Your posts are moderated
Related Questions
what are the function of budget

A bakery has fixed costs of $10 per day and variable costs of $1 per loaf. Its oven can handle up to 50 loaves a day and it is impossible to obtain additional capacity. Sketch the

Q. Determination of GDP in the cross model? In the cross model, GDP is determined as the solution to the equation Y D (Y) = Y We may explain

When did mortgage? Default and housing foreclosure rates begin to rise rapidly? When did the economy go into recession? Was there a causal relationship between the two? Discuss.

What are the differences between perfect competition and monopoly competition? Ans) In a monopoly, you are gaining an unfair benefit over any competition because you own so many

Suppose new instruments for a firm cost $18,000 along with an additional installation fee of $2,000, both of that are depreciable. Complete the depreciation schedule display below

The law requires that the parties be competent to enter into a contract. Give an example of a party who lacks competence.

What are the crisis affect the economies This crisis would affect the UK in 3 major ways. First the UK would be unable to sell its exports to these economies if they are hea

Using supply and demand diagrams, plus explanations of why you have drawn the supply and demand curves the way you have, explain why, in most cases. a) Garbage collectors earn mor

Use a diagram of the open economy model (e.g. fig 32.4 from the text) to illustrate and explain the effect of the following event on the market for loanable funds, the level of net