Recent content by BrianC

-(-1.99 = -0.8571*X) = 1.99 = 0.8571*X should be -(-1.99X = -0.8571) = (1.99X = 0.8571)

little typo in there the third line of my work should be 108.0429 - 108.90 = 106.91*X - 108.90*X

% Abundace Calc Error here's the prob and my work can anyone help me figure out where I'm going wrong? thanks The element silver has two naturally occurring isotopes with masses of 106.91 amu and 108.90 amu. What would be the percent abundance of the first isotope, if the atomic weight were...