Multiple Choice
The concentration of lead in a water sample is found to be 3 ppb. To which of the following is this equivalent?
A) 0.003 mg lead per 1 kg of water
B) 0.03 mg lead per 1 kg of water
C) 0.3 mg lead per 1 kg of water
D) 3.0 mg lead per 1 kg of water
Correct Answer:
Verified
Correct Answer:
Verified
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