A solution contains a mixture of isotopes of `X^(A)`(`t_(1//2) = 14` days) and `X^(A_(2))` (`t_(1//2) = 25` days(. Total acticity is 1 curie at `t = 0`. The activity reduces by `50%` in 20 days. Find: (a) The initial activitites of `X^(A_(1))` and `X^(A_(2))` (b) The ratio of their initial no.of nuclei.

A solution contains a mixture of isotopes of `X^(A)`(`t_(1//2) = 14` d

1.	A solution contains a mixture of isotopes of `X^(A)`(`t_(1//2) = 14` days) and `X^(A_(2))` (`t_(1//2) = 25` days(. Total acticity is 1 curie at `t = 0`. The activity reduces by `50%` in 20 days. Find: (a) The initial activitites of `X^(A_(1))` and `X^(A_(2))` (b) The ratio of their initial no.of nuclei.
Answer» Correct Answer - (a) `3.3669 Ci, 0.6331 Ci`, (b) `0.3245`

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