Posted by **camille** on Thursday, December 11, 2008 at 11:57am.

How would I go about solving this problem?

a granite contains150 parts per million (by atomic proportion) ppma of 235 U and 1050 ppma of 207 Pb. Using the decay rate from above, how old is this rock?

My teacher said the answer was 2100. How did he get that?

(Radio active isotope)

uranium 235

(1/2-life)

704myr

(age range)

10M-4.6byr

(daughter product)

Lead 207

- geollogy-radio metric dating and half lives -
**tgfhum**, Friday, October 22, 2010 at 6:03pm
idk

## Answer this Question

## Related Questions

- Radiometric (Radioactive) Dating - How old is a sample that contains 125 atoms ...
- science - Using absolute dating,a fossil is dated to be 3 million years old and ...
- Geology - The age of granite can be determined using radiometric dating. How ...
- Radiometric Dating - I have to answer the question 'The age of granite can be ...
- Chemistry - About twenty radioisotopes with ultra-long half-lives, from 82 ...
- Chemistry - I have a problem that I'm wondering is a "trick" question. How many ...
- science - what is radio metric dating of the earth and how does it wor?
- Science. - An atom of uranium-235 has a mass 235.043924 amu (atomic mass units...
- physics - Radioactive decay of granite and other rocks in Earth's interior ...
- physical science - a scientist found a fossilized bison. using Carbon-14 dating...

More Related Questions