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The half-life of a radioactive substance is 153 days. How long will it take for 120 grams of the substance to decay to 90 grams?

The half-life of a radioactive substance is 153 days. How long will it take for 120 grams of the substance to decay to 90 grams?
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7 votes
The half-life of a radioactive substance is 153 days. How long will it take for 120

grams of the substance to decay to 90 grams?

User MrSpt
by
8.4k points

1 Answer

11 votes

Answer:

After 30 days ( first half life) 120 /2 = 60 g decays and 60 g remains left.

Explanation:

User JeffProd
by
7.9k points
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