Problem on Chemistry half-life

label Chemistry
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The half-life of plutonium-239 is 24110 yrs. Of

an original mass of 88 g, how much remains

after 1.49482 × 10^5 yrs?

Answer in units of g.

Oct 23rd, 2017

The mass of radioactive element can be expressed by the formula

m(t) = m0 (1/2)T/T0 , where m0 is the initial mass, T0 is the half-life and T is the time elapsed in years.

Thus m(1.49482×105) = 88 * (1/2)149482/24110 = 1.2 g


Apr 8th, 2015

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Oct 23rd, 2017
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Oct 23rd, 2017
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