± Nuclear Decay Calculations: Radioactive decay is characterized by the equation

Question

± Nuclear Decay Calculations: Radioactive decay is characterized by the equation ln(NtN0)=kt where N0 is the initial amount, Nt is the amount remaining at time t, and k is the rate constant. The half-life (t1/2) is the time required for the number of radioactive nuclei in a sample to drop to half of its initial value. It is defined as t1/2=ln 2k where k is the decay constant.

Part B. The half-life of phosphorus-32 is 14.26 days. Calculate its decay constant. Express the decay constant numerically in inverse days.

Explanation / Answer

For part A could you please show the reaction? it's not seen in any place.

For part B all you have to do is solve for K:

k = ln2/t1/2
k = ln2 / 14.26
k = 0.0486 d-1

Hope this helps

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