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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…

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…
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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?

asked
User Yogesh Wadhwa
by
7.6k points

2 Answers

4 votes

Answer:

A

Step-by-step explanation:

A

answered
User Giulio Roggero
by
8.0k points
2 votes

Answer: 2.5 grams

Step-by-step explanation:

answered
User James Sun
by
8.2k points
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