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The Maximum Level of Lead Allowed in Drinking Water Is μ\mu

Question 47

Multiple Choice

The maximum level of lead allowed in drinking water is 15 μ\mu g/kg. What is this concentration in units of parts per million?


A) 15 ppm
B) 1.5 × 10-2 ppm
C) 1.5 × 104 ppm
D) 3.1 ppm

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