Homework Help: Chemistry

Posted by Mima on Tuesday, April 24, 2012 at 4:08pm.

carbon 14 has a half life of 5715 years. If you start with a 5 gram sample of 14C, what mass is left after 15,000 years?

Chemistry - DrBob222, Tuesday, April 24, 2012 at 4:20pm
k = 0.693/t_1/2
solve for k.

ln(No/N) = kt
No = 5.00 g
N = ?
k from above.
t = time in years = 15,000
Chemistry - Mima, Tuesday, April 24, 2012 at 4:40pm
Thank you so much.

Answer this Question

Related Questions

ChemB - The activity of carbon 14 in living tissue is 15.3 disintegrations per ...
Chemistry - The cloth shroud from around a mummy is found to have a carbon-14 ...
oceanography - 14C has a half-life of 5,730 years. If we start with 70 grams of ...
Pre-Cal - The radioactive isotope of Carcon (^14C)has a half life of 5730. What ...
12th grade - The radioactive isotope of Carcon (^14C)has a half life of 5730. ...
chemistry - A 1.00-g sample of carbon from a modern source gave 15.3 ...
chemistry - A 1.00-g sample of carbon from a modern source gave 15.3 ...
Chemistry - The half-life for radioactive decay of 14C is 5730 years (it emits &...
geology - suppose you have a sample of clamshell at a paleoindian site and you ...
chemistry/math - 100g of bone contain ratio of 14C and 12C. 6.8% 14C is present ...

For Further Reading

First Name:
School Subject:
Answer: