There is a 50 g sample of Ra-229. It has a half-life of 4 minutes. How much will be left after 12 minutes? A. 3.13 g B. 6.25 g C. 12.5 g D. 25 g

asked Feb 27, 2020 94.3k views

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There is a 50 g sample of Ra-229. It has a half-life of 4 minutes.

How much will be left after 12 minutes?
A. 3.13 g
B. 6.25 g
C. 12.5 g
D. 25 g

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3 votes

Answer:

6.25

Step-by-step explanation:

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2 votes

B. 6.25 g

Divide it by 2 every 4 minutes

Reda Igbaria answered Mar 3, 2020

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