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lesya [120]
3 years ago
10

The half life of radium-226 is 1600 years. How many grams of a 0.25g sample will remain

Chemistry
1 answer:
myrzilka [38]3 years ago
4 0

Answer:

Explanation:

half life = 1600 years .

m = M  x ( \frac{1}{2} )^n

m is mass of the radioactive object after n half lives , M is original mass.

n = 4800 / 1600

= 4

Putting the valus of n and M we have

m = .25 x ( \frac{1}{2} )^3

= .03125 g .

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