define molecular Mass of a substance
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In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance. The base SI unit for molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.
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Explanation:
Molecular mass definition is - the mass of a molecule that is equal to the sum of the masses of all the atoms contained in the molecule.
The molecular masses of hydrogen, nitrogen, and oxygen are 2, 42, and 32, respectively.
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