Chemistry

posted by Shay

Po-210 Ia an alpha emitter with a half-life of 138 days. how many grams of Po-210 remain after 552 days if the sample initially contained 5.80g of Po-210?

1. Shay

Suppose that you start with 1000000 atoms of a particular radioactive isotope. how many half-lives woruld be required to reduce the number of undecayed atoms to fewer than 1000?

2. DrBob222

#1.
k = 0.693/t1/2
Substitute k in the below equation.

ln(No/N) = kt
No = 5.80g
N = ?
K = from above
t = 552 days
Solve for N

For #2, you want 1,000,000/2^n = 1,000
Solve for n. The easy way to do that is to solve for 2^n and then n.

3. gunth

0.3625

Similar Questions

1. Physics

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus?
2. chemistry

Iodine-131, a beta emitter, has a half-life of 8 days.How many grams of a 10.0g sample of iodine-131 would remain after 56.0 days?
3. Science math

Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 1104 days?
4. integrated math

Suppose a laboratory has a 26 g sample of polonium-210. The half-life of polonium-210 is about 138 days.?
5. science

Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 966 days?
6. sciencemath

Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 966 days?
7. Physical Science

1. Which equation correctly shows beta decay?
8. algebra

Consider that the half-life of Polonium-210 is 140 days.What approximate daily percentage of decay does Polonium-210 demonstrate?
9. Chemistry

In 2006, Soviet dissident Alexander Litvinenko was murdered when Polonium-210 was added to his tea; he died three weeks later. Polonium-210 is an alpha emitter. What other product is formed?
10. Chemistry

Static charge can interfere with the production of plastic products by attracting dust and dirt. to reduce it, manufacturers expose the area to polonium-210, which has a half-life of 138 days. How much of a 25.0-g sample will remain …

More Similar Questions