Drinking water from a well is discovered to have an arsenic concentration of 3.4 * 10^-4g 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^-5g/L. B) Yes, 3.4 * 10^-4 g is higher than the permissible value of 1.0 * 10^-5g/L. C) No, 3.4 *10^-4 g is lower than the permissible value of 1.0 *10^-3g/L. D) Yes, 3.4 * 10^-4 g is higher than the permissible value of 1.0 *10^-3g/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, which is equal to 1.0 x 10^-4 g/L. The concentration of arsenic in the well water is 3.4 x 10^-10 g/L, which is lower than the permissible level. Therefore, the statement in choice A is incorrect. The statement in choice C is also incorrect, as the permissible level is not 1.0 x 10^-3 g/L. The correct answer is B, as the concentration of arsenic in the well water is higher than the permissible level of 1.0 x 10^-4 g/L.

Drinking Water from a Well Is Discovered to Have an Arsenic