00:01
Hello, in this question it is given, that is the half life is equal to 12 .3 years and the initial mass of the titrarium.
00:18
It is, that is for the tritium, it is given 1 gram and the time of the decay.
00:27
It is given time of decay is equal to 24 .6 years.
00:36
That is called, we can symbolize it as t1 and the time of decay is equal to 36 .9 years.
00:48
The second time of decay, this is t2.
00:52
And here we need to find out the mass of that is remaining after decay.
01:06
So, here we know that that is t half is equal to.
01:16
To 0 .693 divided by lambda.
01:20
This is a decay constant.
01:23
So from here we can find out the value of this lambda decay constant that is 0 .693 divided by t half that is 12 .3 and this is equal to 0 .056 years inverse...