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Why do we need to convert mass to moles in stoichiometry problems.
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Why do we need to convert mass to moles in stoichiometry problems.

User MishaF
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Since a mole represents a large number of molecules, it is not possible to count the number of molecules directly, the only method is through weight. The mass is converted to moles so that the number of molecules in the reaction are kept track of.
User Mike Abdullah
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