Biology Forums - Study Force

Science-Related Homework Help Chemistry Topic started by: maportil on May 12, 2024


Title: A rock contains 0.37 mg of Pb-206 and 0.95 mg of U-238. Approximately how many U-238 atoms were in ...
Post by: maportil on May 12, 2024

A rock contains 0.37 mg of Pb-206 and 0.95 mg of U-238. Approximately how many U-238 atoms were in the rock when it was formed billions of years ago? (The half life for 238U →206Pb is 4.51 × 109 yr.)



▸ 1.32 atoms

▸

5.8 × 10–6 atoms



▸

2.4 × 1018 atoms



▸

3.3 × 1018 atoms



▸

3.5 × 1021 atoms


Title: Re: A rock contains 0.37 mg of Pb-206 and 0.95 mg of U-238. Approximately how many U-238 atoms were in ...
Post by: letssdoothiss on May 12, 2024
Content hidden


Powered by SMF | SMF © 2015, Simple Machines