SC Swimming Pool Practice Questions - South Carolina Swimming Pool Contractor Examination Exam

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How many pounds of 65 percent calcium hypochlorite are required to raise free chlorine by 2 ppm in a 20,000-gallon pool? Use pounds = (gallons × 8.34 × ppm) ÷ 1,000,000 ÷ decimal strength.

0.17 pounds 0.51 pounds 2.00 pounds 3.34 pounds

Correct Answer:

0.51 pounds

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