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Problem 1. It takes 5.2 min for a 1.000 – g sample of 210Fr to decay to 0.250 g. What is the half-life of 210Fr ? Problem 2. How much time is required for a 6.25 - mg sample of "Cr to decay to 0.75mg if it has a half-life of 27.8 days?

Problem 1. It takes 5.2 min for a 1.000 – g sample of 210Fr to decay to 0.250 g. What is the half-life of 210Fr ? Problem 2. How much time is required for a 6.25 - mg sample of "Cr to decay to 0.75mg if it has a half-life of 27.8 days?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1. It takes 5.2 min for a 1.000 - g sample of 210Fr to decay to 0.250 g. What is the half-life of 210Fr? Problem 2. How much time is required for a 6.25 - mg sample of "Cr to decay to 0.75mg if it has a half-life of 27.8 days?
Transcribed Image Text:Problem 1. It takes 5.2 min for a 1.000 - g sample of 210Fr to decay to 0.250 g. What is the half-life of 210Fr? Problem 2. How much time is required for a 6.25 - mg sample of "Cr to decay to 0.75mg if it has a half-life of 27.8 days?
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