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The half life of strontium-90 is about 28 years. Find the amount of strontium-90 left from a 10 gram sample after 56 years.

Guest Apr 27, 2017

Best Answer 

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M =10 x 2^-(56/28)

M =10 x 2^-2

M =10 x 0.25

M =2.5 grams left after 56 years.

Guest Apr 27, 2017
 #1
avatar
+1
Best Answer

M =10 x 2^-(56/28)

M =10 x 2^-2

M =10 x 0.25

M =2.5 grams left after 56 years.

Guest Apr 27, 2017

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