Chemical Forums

Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Tom on June 28, 2004, 08:11:14 AM

Title: relative atomic weight
Post by: Tom on June 28, 2004, 08:11:14 AM

If a hypothetical element is made up of two isotopes with masses of 191.99 amu and 193.95 amu.  The relative abundance of each isotope is 37.5 percent and 62.5 percent respectively.  

Would the relative atomic weight of this element be 192.96

Title: Re:relative atomic weight
Post by: Donaldson Tan on June 28, 2004, 09:17:15 AM

relative atomic mass
= 37.5% X 191.99 + 62.5% X 193.95
= 193.22 amu (3S.F.)

Title: Re:relative atomic weight
Post by: Tom on June 28, 2004, 12:50:37 PM

Thanks, I realize were I made the mistake.