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    OK so a sample of chromium has four isotopes
    Isotope: Relative Abundance
    50 Cr: 0.6
    52 Cr: 12.6
    53 Cr: 1.5
    54 Cr: 0.3
    These are not percentages btw.... SO how do i work out the relative atomic mass of chromium?
    Steps aswell please
    Thanks in advance
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    Try doing it the usual way, but instead of dividing by 100, divide by the sum of the relative abundances - after all, if you added up the percentages, that'd come to 100.
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    Turn them into percentages.
 
 
 
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