Calculating Relative Atomic Mass

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4 Terms

1
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What did different isotopes of an element occur in?

Different quantities, or isotopic abundances

2
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What is the relative atomic mass of an element?

Average mass of all its isotopes

3
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What’s step 1 for working out relative atomic mass from isotopic abundances?

Multiply each relative isotopic mass by its percentage relative isotopic abundance and add up all results.

4
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What’s step 2 for working out relative atomic mass from isotopic abundances?

Divide by 100