78.8k views
2 votes
You have 32 grams of a radioactive kind of gold. If its half-life is 3 days, how much will be left after 6 days?

a. 5 grams
b. 4 grams
c. 16 grams
d. 8 grams

2 Answers

6 votes

Answer:

d. 8 grams.

Explanation:

After 1 half life there is 1/2 * 32 = 16 grams left , after another half-life ( at 6 days) there is 1/2 * 16 = 8 grams left.

User Maisie
by
9.1k points
4 votes
d. 8 grams
The equation
Ending Amount = Beginning Amount / 2(time / half-life)
32/2^(6/3)
32/2^2
32/4
=8
User Konstantin Likhter
by
8.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories