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1. Activity
The half life of Radon gas is how long will it take for a sample to decay to 33% of It's initial activity?

Here's what I've done so far:
. I then calculated a value of lambda which is 2.10x10^-6, but then how can i calculate t, if i havn't been given the initial Activity?
2. Re: Activity
(Original post by Emissionspectra)
The half life of Radon gas is how long will it take for a sample to decay to 33% of It's initial activity?

Here's what I've done so far:
. I then calculated a value of lambda which is 2.10x10^-6, but then how can i calculate t, if i havn't been given the initial Activity?
If it decays to 33%, I think
So you know
And then you can calculate t because you have lambda.
3. Re: Activity
(Original post by medicinemm)
If it decays to 33%, I think
So you know
And then you can calculate t because you have lambda.
Ahhh ok makes sense thanks.
4. Re: Activity
Please get into the habit of specifying time units, or you'll get very confused.