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Toxic Dumping in Acidified Lakes. Consider a situation in which acid rain has heavily polluted a lake to a level of pH 4. An unscrupulous chemical company dumps some acid in to the lake illegally Assume that the lake contains 100 million gallons of water and that the company dumps 100,000 gallons of acid with pH 2.
a.What is the hydrogen ion concentration, [H+], of the lake polluted by acid rain alone?
b.Suppose that the unpolluted lake, without acid rain, would have pH 7. If the lake were then polluted by company acid alone (no acid rain), what hydrogen ion concentration, [H+], and pH would it have?
c. What is the hydrogen ion concentration, [H'], after the company dumps the acid into the acid rain-polluted lake (pH 4)? What is the new pH of the lake?
d. If the U.S. Environmental Protection Agency can test for changes in pH of only 0.1 or greater, could the company’s pollution be detected?
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Chapter 8 Solutions
EBK USING AND UNDERSTANDING MATHEMATICS
- 38,189 5. Draw a detailed graph to and set up, but do not evaluate, an integral for the volume of the solid obtained by rotating the region bounded by the curve: y = cos²x_for_ |x| ≤ and the curve y y = about the line x = =플 2 80 F3 a FEB 9 2 7 0 MacBook Air 3 2 stv DGarrow_forwardFind f(x) and g(x) such that h(x) = (fog)(x) and g(x) = 3 - 5x. h(x) = (3 –5x)3 – 7(3 −5x)2 + 3(3 −5x) – 1 - - - f(x) = ☐arrow_forwardx-4 Let f(x)=5x-1, h(x) = Find (fo h)(0). 3 (fo h)(0) = (Type an integer or a fraction.)arrow_forward
- Fill in the blanks to write the calculus problem that would result in the following integral (do not evaluate the interval). Draw a graph representing the problem. π/2 So/² 2xcosx dx Find the volume of the solid obtained when the region under the curve 38,189 on the interval is rotated about the axis.arrow_forwardLet f(x) = -5x-1, g(x) = x² + 5, h(x) = · x+4 3 Find (hog of)(1). (hogof)(1)= (Simplify your answer. Type an integer or a decimal.)arrow_forwardFor the given function, find (a) the equation of the secant line through the points where x has the given values and (b) the equation of the tangent line when x has the first value. y= f(x) = x²+x; x=-1,x=2 a. Which of the following formulas can be used to find the slope of the secant line? ○ A. 2-(-1) f(2) f(-1) 2+(-1) C. 1(2)+(-1) The equation of the secant line is 1(2)+(-1) О в. 2+(-1) f(2)-(-1) D. 2-(-1)arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage