define molar mass
for class 9
Answers
chemistry, the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. ... However, for historical reasons, molar masses are almost always expressed in g/mol.
The molar mass is a bulk, not molecular, property of a substance. The molar mass is an average of many instances of the compound, which often vary in mass due to the presence of isotopes. Most commonly, the molar mass is computed from the standard atomic weights and is thus a terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth.
The molar mass is appropriate for converting between the mass of a substance and the amount of a substance for bulk quantities.
Molar mass
Common symbols = M
SI unit = kg/mol
Other units = g/mol
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