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13 votes
13 votes
you have 87,520 grams of a radioactive kind of lead. How much will be left after 108 minutes if its half-life is 27 minutes

User Ed Summers
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2 Answers

19 votes
19 votes

Answer:

The answer is 5470 grams of lead will be left.

Explanation:

Given:

The half life of lead is 27 minutes

Now,

108/27 = 4

Here, we get the value 4 so, we divide the amount of lead by 4². i.e., 16

Now,

87520/16 = 5470

Thus, After 108 minutes 5470 grams of lead will be left.

-TheUnknownScientist 72

User Wiredniko
by
2.7k points
17 votes
17 votes

Answer:

5,470 mg

Explanation:

108 minutes is 4 half-lives:

Time Lead

Min. mg Pb

0 87520

27 43760

54 21880

81 10940

108 5470

User Bernieslearnings
by
3.0k points