The half-life of radon-222 is 3.82 days. If a sample of gas contains 4.38 μg of radon-222, how much will remain in the ample aft
er 15.2 days?
1 answer:
Answer:

Explanation:
We can write the amount of mass of radon-222 left after a time t by using the equation:

where
is the initial mass
t is the time
is the half-life
Substituting t = 15.2 d in the formula, we find

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