Question

help fast and explain how to solve half life

A 208 grams sample of sodium-24 decays to 52 grams in 30 hours. What is the half-life
of this radioactive sample?​

Answer 1

The half-life of the radioactive sodium-24 sample is 15 hours.

Explanation:

We have the following values concerning the half-life of the sodium-24 sample:

time (hours)             amount of sample (g)

30                                         52

15                                         104

0                                          204

So the half-life of the sample, the time in which half of the sample will decay, is 15 hours.

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