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1. Write the balanced reaction for the positron decay of 91Mo. 1a. It takes 335.85 hrs for a sample of molybdenum-91 to decay from 1.00g

1. Write the balanced reaction for the positron decay of 91Mo.

1a. It takes 335.85 hrs for a sample of molybdenum-91 to decay from 1.00g to 0.031g. What is the half-life of 91Mo?

2. One mode of decay for 60Co is electron capture. Write the balanced reaction for the electron capture of 60Co.

2a. The half-life of 60Co is 5.26 years. How long will it take for 10.0% of a sample of 60Co to decay?

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