Drinking water from a well is discovered to have an arsenic concentration of 3.4 × 10^-4 g of arsenic per liter.Does this value exceed the permissible level of arsenic in drinking water of 10 ppb? A) No, 3.4 × 10^-4 g is lower than the permissible value of 1.0 × 10^-5 g/L. B) Yes, 3.4 × 10^-4 g is higher than the permissible value of 1.0 × 10^-5 g/L. C) No, 3.4 × 10^-4 g is lower than the permissible value of 1.0 × 10^-3 g/L. D) Yes, 3.4 × 10^-4 g is higher than the permissible value of 1.0 × 10^-3 g/L. E) It is not possible to determine the answer from the information given.

Question

Quizplus · Accepted Answer

The permissible level of arsenic in drinking water is 10 ppb (parts per billion), which is equivalent to 10 × 10^-9 g/L or 1.0 × 10^-8 g/L. The concentration of arsenic in the well water is 3.4 × 10^-4 g/L, which is significantly higher than the permissible level, making choice B correct.

Drinking Water from a Well Is Discovered to Have an Arsenic