Question 7009 of 229 · California Water Distribution Operator Exam
How many gallons of 12.5 percent liquid hypochlorite (assume 8.34 lb per gallon) are needed to dose 1.0 MG of water to 2.0 mg/L?
Exactly one answer is correct.
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Correct answer to question 7009
- D: 16 gallons
Explanation
Pounds of chlorine = 1.0 x 2.0 x 8.34 = 16.7 lb. Gallons = 16.7 / (0.125 x 8.34) = 16 gallons. Dividing by the percent strength, not multiplying, is the key step.
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