What are the Weighted Averages of Element X Isotopes: 31x and 34x?

[p4cifico]

Element x has two naturally occurring isotopes. The masses (amu) and % abundance are given. 31x is 35% with mass of 31.16 and 34x is 64% with 34.3 amu's

 

[Kushal]

i suppose you have to calculate the atomic mass of the element??! huh

let's take the example of chlorine, which has two istopes too. Cl-35 and Cl-37, in the ratio of 3:1.

on average, chlorine atoms have atomic mass of: [(35 * 3) + (37 * 1)] / 4

similarly, you can calculate the atomic mass of x, if that's what you were asking??!

 

[chemisttree]

Are you familiar with the term 'weighted average'?