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guapka [62]
3 years ago
10

A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sample of this isotope is allowed to decay

for 80 minutes, how many grams of the radioactive isotope will remain?
Chemistry
2 answers:
anzhelika [568]3 years ago
8 0

Answer:

A

Explanation:

A

Ivahew [28]3 years ago
5 0

Answer: 2.5 grams

Explanation:

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