A sample of 7.0×10^9 atoms that decay by alpha emission has a half-life of 70 min....
A sample of 7.0×10^9 atoms that decay by alpha emission has a half-life of 70 min.
How many alpha particles are emitted between t=50min and t=200min?
Express your answer using two significant figures.
Homework Answers
Concept - use the half life period to find the decay constant. Use the decay constant to find the number of particles at 50 minutes and then again at 200 minutes. Using these two numbers find the required number of alpha particles emitted as shown below
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