Question

PLZ HURRY IN THE MIDDLE OF A QUIZ

If you start off with 100 grams of Uranium-238, how much would you have left after 4 half-
lives?

A. 6.25g
B. 12.5g
C. 25g
D. not enough information to answer

Answer 1

Answer:

D

Explanation:

not enough information to answer

Answer 2

Answer:

A. 6.5g

Explanation:

1st : 100g/2 = 50g

2nd : 50g/2 =25g

3rd : 25g/2 = 12.5g

4th : 12.5g/2 = 6.5g

I hope this helps.

:)