I'm on the last question for my homework and I don't get how to do it, here it is...
An unknown element named Renegadium (Rg) consists of four isotopes Rg (A) mass # 281, Rg (B) mass # 282, Rg (C) mass # 283, Rg (D) mass #284. Isotope C has a percentage abundance of 2.00%. Isotopes A and D have the same percentage abundance. Calculate the percent abundance of A, B and D.
2006-10-22 11:54:10 · 3 answers · asked by Silentspeedster 2 in Science & Mathematics ➔ Chemistry
I don't think you have enough information. If it's saying that A and D have the same abundance as each other, their abundance could be anything up to 49%, and then B would have an abundance of 98% minus the sum of the abundances of A and D. But if it's saying that A and D have the same abundance as C, then they both have 2% abundance and B has an abundance of 94%.
2006-10-22 11:55:53 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
if you know the relative isotopic mass of Rg you can find the percentage abundance of A ,B and D by taking the mass of percentages of A , B and D present as X , X and (98-2x)=(100-2x-2) respectively.Then by findin X since you know the relative isotopic mass you can firnd the relevant percentages.
2006-10-22 19:09:11 · answer #2 · answered by wes 1 · 0⤊ 0⤋
Don't you use something like Stoichiometry? I remember using lots of stoichiometry to find percents of elements.
2006-10-22 19:03:16 · answer #3 · answered by just_me 1 · 0⤊ 0⤋