• Support PF! Buy your school textbooks, materials and every day products Here!

Finding the atomic mass of a hypothetical element.

  • Thread starter Aeropsia
  • Start date
  • #1
1
0
Here is a problem I have. Not really sure where to start. I'm not looking for the answer, I just want someone to point me in the right direction.

A hypothetical element X has three isotopes: 40X, 41X, and 42X. Their abundances are 72.00%, 9.00% and 19.0% respectively. What is the atomic mass of X?

(A) 40.5 amu (B) 40.8 amu (C) 41.0 amu (D) 41.5 amu

Never mind, found info on how to find the answer here, should have Googled first... http://chemistry.about.com/od/chemistryquickreview/a/atomicweight.htm
 

Answers and Replies

Related Threads on Finding the atomic mass of a hypothetical element.

Replies
1
Views
4K
Replies
3
Views
171
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
4
Views
2K
Replies
1
Views
15K
  • Last Post
Replies
5
Views
701
Replies
13
Views
5K
Replies
6
Views
1K
  • Last Post
Replies
5
Views
5K
Top