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The half life of radon-222 is 3.8 days. How much of a 100 gram sample is left after 12.2 days?

The half life of radon-222 is 3.8 days. How much of a 100 gram sample is left after-example-1
User Nile
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We have the following:

The first thing is to calculate what the 12.2 days represent with respect to its half-life, which is 3.8 days, therefore


(12.2)/(3.8)=3.2

Therefore it represents 3.2 times the half life of the compound, therefore 100 grams would remain:


100\cdot\mleft((1)/(2)\mright)^(3.2)=10.88

Therefore there would be a total of 10.88 grams

User Joseangelmt
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