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The activity of a sample is measured in…
During radioactive decay, the number of unstable isotopes remaining ___________ over time.
During radioactive decay, as time passes, what will happen to the overall rate of decay?
What is the relationship between the number of nuclei remaining and the activity of the sample?
What is the activity of a radioactive sample that emits 1,800 particles per minute?
How much of a radioactive sample has decayed after two half lives?