At any instant the ratio of the amount of radioactive substances is 2 : 1. If their half-lives be respectively 12 and 16 hours, then after two days, what will be the ratio of the substances ?
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Explanation:
For substance A :
2N
0
→N
A
=2N
0
(
2
1
)
48/12
=
2
3
N
0
=
8
N
0
For substance B:
N
0
→N
B
=2N
0
(
2
1
)
48/16
=
2
3
N
0
=
8
N
0
N
A
:N
B
=1:1
i hope it's helpful for you
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