Question

Drug has a half-life of 4 hours. Assuming someone takes a dose of 512 mg, how much of the drug remains in the system after 36 hours?

0 1 mg
© 0.0000001 mg
O 0.5 mg
0 168 mg

Answer 1

1 mg

Explanation:

Answer 2

36 / 4 = 9 half-lives

2^9 = 512

Therefore after 36 hrs 512 / 512 = 1 mg remains