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09-04-2018
Mathematics

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carbon-11 has a half-life of about 20 minutes if we start with 200 grams how much will be left after 3 hours?

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TheiMacNoob TheiMacNoob

09-04-2018

a=m(1/2)^(t/h)

a is the answer
m is the mass
h is the half-life
t is the total time

200*(1/2)^(180/20)=a
200*(1/2)^9=a
0.3906=a

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