If a radioactive sample starts with 100 g, how many grams of the original substance will be left after 5 half-lives? Please show all work.

Rninty asked Aug 25, 2023

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10 votes

Rninty asked Aug 25, 2023

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20 votes

Answer:

3.125g

Step-by-step explanation:

100/2
50 1
50/2
25 2
25/2
12.5 3
12.5/2
6.25 4
6.25/2
3.125g 5

Rudydydy answered Aug 30, 2023

3.2k points

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