Question 7008 of 229 · California Water Distribution Operator Exam
How many pounds of 65 percent calcium hypochlorite are needed to dose 0.5 MG of water to 3.0 mg/L?
Exactly one answer is correct.
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Correct answer to question 7008
- B: 19.2 lb
Explanation
Pounds of pure chlorine = 0.5 x 3.0 x 8.34 = 12.5 lb. Divide by the purity (0.65) to get 19.2 lb of hypochlorite. Multiplying by 0.65 instead of dividing gives too little chemical.
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