Question 2028 of 234 · California Wastewater Operator Exam
A sludge sample is found to be 4 percent solids. What is the approximate concentration in mg/L?
Exactly one answer is correct.
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Correct answer to question 2028
- C: 40,000 mg/L
Explanation
One percent solids equals 10,000 mg/L, so 4 percent equals 40,000 mg/L. A common mistake is to move the decimal by the wrong number of places.
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