Question

If you have 10,000 grams of a substance that decays with a half-life of 14 days, then how much will you have after 28 days?

Round to the nearest whole number.

Answer 1

2500g

Step-by-step explanation:

Half-life like the name suggests cuts the amount by half. So 10,000 grams would be 5,000 grams in one half-life (14 days). But 28 days is two halflives (14 + 14 = 28), thus 5,000 would be cut in half again to finally be 2500 g.