Carbon-14 has a half-life of 5730 years. How long will it take 15 grams of carbon-14 to be reduced to 12.5 grams? Round to the nearest year.
A) 655 years
B) 3470 years
C) 1507 years
D) 14,812 years

Question

Quizplus · Accepted Answer

The decay of carbon-14 follows an exponential decay model. Using the formula for half-life decay, it takes approximately 5730 years for the amount to reduce by half. To reduce from 15 grams to 12.5 grams, which is a reduction by 1/8, it takes about 1507 years.

Carbon-14 Has a Half-Life of 5730 Years