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a 375 g sample of well water is found to contain 17.0 mg of lead. How much lead (in parts per million) is in the well water?
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a 375 g sample of well water is found to contain 17.0 mg of lead. How much lead (in parts per million) is in the well water?

User Waleed Iqbal
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(17.0 × 10^-3 g) / (375 g) = 4.53 × 10^-5 = 45.3 × 10^-6 = 45.3 ppm
User Allyson
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