Homework Help: Chemistry

Posted by Gigi on Sunday, September 26, 2010 at 7:16pm.

Lead has four stable isotopes. ^204Pb (1.4%), ^206Pb (24.1%). ^207Pb (22.1%) and ^208Pb (52.4%). Find the atomic mass of ^208 Pb given that ^204Pb has an atomic mass of 203.973 amu, ^206Pb has an atomic mass of 205.974 amu, and ^207Pb has an atomic mass of 206.976 amu.

Chemistry - bobpursley, Sunday, September 26, 2010 at 7:22pm
atomicmass=Sum of massIsotopes*decimalPercent

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