The permissible level of arsenic in drinking water is 10 ppb in the United States.What is the maximum mass of arsenic, in grams, allowable in 1 L of drinking water? A) 10 g B) 1.0 × 10^-6 g C) 1.0 × 10⁶ g D) 1.0 × 10^-5 g E) No amount of arsenic is allowable in drinking water.

Question

Quizplus · Accepted Answer

1 ppb = 1 μg/L = 1 g/10⁹ L. Therefore, the maximum mass of arsenic allowable in 1 L of drinking water is 1.0 × 10^-6 g.

The Permissible Level of Arsenic in Drinking Water Is 10