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Please explain the difference between molar mass and gram molecular mass.’

Please explain the difference between molar mass and gram molecular mass.’

Grade:9

1 Answers

SHANMUKESHWAR
461 Points
8 years ago
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 its 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.
Multiplying by the molar mass constant ensures that the calculation is dimensionally correct: atomic weights are dimensionless quantities (i.e., pure numbers) whereas molar masses have units (in this case, grams/mole).

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