| Molecular
Mass |
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| The chemical atomic weight or the |
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| average atomic
weight (A) of an |
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| element in nature
is given by the |
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| equation |
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| A = A1p1
+ A2p2
+ .......+ Anpn |
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| where A1, A2,
...... An are the atomic |
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| masses in Daltons of the n isotopes of |
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| the element and p1,
p2 ...... pn are the |
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| fractional
abundance of these isotopes. |
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