We’re being asked to determine the mass of C-14 remaining after 2.4x104 years if there are 2.67 mg initially
Recall that radioactive/nuclear decay of isotopes follows first-order kinetics, and the integrated rate law for first-order reactions is:
The half-life of carbon-14 is 5730 years. If a sample initially contains 2.67 mg carbon-14, what mass remains in the sample after 2.40 ξ 104 years?
a. 0.67 mg
b. 1.62 mg
c. 2.15 mg
d. 0.15 mg
e. 1.22 mg
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