1) Os-182 has a half-life of 21.5 hours. How many grams of a 10 g sample would have decayed after exactly three half-lives?

asked Oct 21, 2020 180k views

4 votes

1) Os-182 has a half-life of 21.5 hours. How many grams of a 10 g sample would have decayed after

exactly three half-lives?

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7 votes

Answer:

1.25 g

Step-by-step explanation:

.5^3 = 0.125

0.125*10 = 1.25 g

Zimmerbimmer answered Oct 26, 2020

7.2k points

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