Thursday
April 24, 2014

Homework Help: geollogy-radio metric dating and half lives

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

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

science - Using absolute dating,a fossil is dated to be 3 million years old and ...
Chemistry - About twenty radioisotopes with ultra-long half-lives, from 82 ...
Geology - The age of granite can be determined using radiometric dating. How ...
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?
Radiometric Dating - I have to answer the question 'The age of granite can be ...
physics - Radioactive decay of granite and other rocks in Earth's interior ...
math - The amount of pollution, A (in part per million), present in the air ...
chemistry - Calculating Parts per million Helium gas, 3.0 x 10^-4 is dissolved ...
sciance - what are the definitions of these words: Solute Infer Serial Dilute ...

Search
Members