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A sample of 10 -2 kg each of 2 substances A and B with half lives of 4 and 8 sec respectively. The atomic weight of A and B are in the ratio of 1: 2. Find the amount of A&B after an interval of 16 sec. Also the report the ratio of initial rates of decay these two.
Hi Kiran, atomic weights ratio of A and B=1:2 implies the no of molecules of B in the sample will be half the no of molecules of A after 16 seconds: A will be 10-2/16 kg B will be 10-2/4 kg ratio of initial rates = k1*[A]/k2*[B] k1/k2=8/4 =2 and [A]/[B] = 2 ratio of initial rates = k1*[A]/k2*[B] = 2*2=4
Hi Kiran,
atomic weights ratio of A and B=1:2
implies the no of molecules of B in the sample will be half the no of molecules of A
after 16 seconds:
A will be 10-2/16 kg
B will be 10-2/4 kg
ratio of initial rates = k1*[A]/k2*[B]
k1/k2=8/4 =2 and [A]/[B] = 2
ratio of initial rates = k1*[A]/k2*[B] = 2*2=4
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