The half-life of 14 grams of a substance is 3 hours. How many grams of the substance remain after 6 hours?
A)3)5 grams
B)7)0 grams
C)14 grams
D)28 grams
E)7)5 grams

Question

Quizplus · Accepted Answer

The half-life of a substance is the amount of time required for that substance to decay to half of its original mass. In the context of this question, 6 hours represents two half-lives. Therefore, the substance will decay to one-fourth of its original mass, or 3.5 grams.

The Half-Life of 14 Grams of a Substance Is 3