Q 20 Exercise

Expert-verifiedFound in: Page 1236

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

A sample of 1.0x10^{10}atoms that decay by alpha emission

has a half-life of 100 min. How many alpha particles are emitted

between t = 50 min and t = 200 min?

Therefore are emitted between t=50 min and t = 200 min.

To begin, we must determine the number of radioactive atoms at time t = 50 minutes:

We determine the number of radioactive atoms at time t = 200 minutes:

We determine the number of radioactive atoms between time t = 50 minutes and 200 minutes:

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