Number of moles of any chemical substance is given by the ratio of given mass to _____.

Avagadro's number

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atomic mass

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molar mass

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atomic number

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Solution

The correct option is C molar mass

Molar mass means the mass of one mole of the substance.

In other words, it gives the number of grams per mole of a compound.

Hence, number of moles is the ratio of given mass by molar mass.

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Similar questions

Mass of a given substance = Number of moles $\times$ gram molecular mass of the substance.

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