- #1

amazingphysics2255

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- Homework Statement
- Yttrium 90 is also radioactive and is a beta particle emitter with a half-life of 2.67 days.

Discuss the amount of Yttrium that would be present in the above example after the

Strontium had been decaying for the first 8 days.

- Relevant Equations
- N/a

I believe I use a formula such as $$n\frac{t}{T}$$ but am unsure I've never done one without a given amount of the sampleSo if I was to use this I would get 8/(divided by)2.67 = 2.99625468 rounded to either 3 or 2.997 But i don't think this is write because you need to use 1/2 in this formula.

edit: So 8/2.67 is going to equal the number of half-lives has gone by so 2.997 halflives have gone by

(1/2)^2.997= 0.125 rounded so is the answer 0.125g?

edit: So 8/2.67 is going to equal the number of half-lives has gone by so 2.997 halflives have gone by

(1/2)^2.997= 0.125 rounded so is the answer 0.125g?

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