# Working with radio active decay

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How many atoms decay in 24 hours in a 2.5 x 10(exponent negative 6) Ci source? 1 Ci=3.700 x 10(exponent 10) atom/s. Please show how you arrive at the solution.

a. 0.22 atoms

b. 1.3 x 10(exponent 21) atoms

c. 9.3 x 10(exponent 4) atoms

d. 2.3 x 10(exponent 6) atoms

e. 8.0 x 10(exponent 9) atoms.

https://brainmass.com/chemistry/chemical-kinetics/working-radio-active-decay-7571

#### Solution Preview

1 Curie = 3.7 x 10^10 atoms/second

means this much atoms undergo radio active decay per second.

In our question, ...

#### Solution Summary

Detailed answer is provided for question on rate of radioactive decay-half life .

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