Strontium-90 has a half-life of about 28 years. After 112 years, how many grams of a 50 g sample will remain?

Mathematics

2 answers:

kvv77 [185]3 years ago

5 0

112 = 4 * 28 so the factor is (1/2)^4 = 1/16
Number of grams remaining = 50 * 1/16 = 3.125

Its a

Andrei [34K]3 years ago

4 0

Answer:

3.125G

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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Brrunno [24]

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Solution:

Let "n" be the number

From given,

$\text{ Five less than 1/5 times a number } = \frac{1}{5}n - 5 = \frac{5}{n} - 5$

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