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OpenStudy (anonymous):
Strontium-90 is a radioisotope that will decrease in mass by one-half every 29 years. How many years will it take for a 10.0-gram sample of strontium-90 to decay to 5.00 grams? Answer 1 14.5 29 58
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OpenStudy (anonymous):
@Somy
OpenStudy (anonymous):
I still don't quite understand it...how would I get 58? Why would I divide by 2.5?
OpenStudy (eric_d):
You need to find the half-life first|dw:1407506030019:dw|
OpenStudy (eric_d):
given half-life is 29 years
OpenStudy (anonymous):
yes
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OpenStudy (eric_d):
|dw:1407506108123:dw|
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