what is the difference between molar mass and molecular mass....
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Molecular mass gives the mass of a single molecule (sum of the atomic masses in the molecule), whereas molar mass gives the average mass of the molecule (mass of Avogadro number of molecules).
- Therefore, the molecular mass of a molecule containing heavier isotopes can be few units higher than the molar mass.
- Otherwise, the value of the molar mass and molecular mass is quiet the same for a similar molecule; only the units are different. The unit of the molecular mass is amu, and the unit of the molar mass is gmol-1.
- It is accurate to use the molecular mass in calculations of higher amounts of molecules than using the molar mass.
- Molar mass is a measurement, which can be given to atoms, molecules or compounds. But molecular mass is only determined in the molecules. If it is the mass of an atom, a different terminology called atomic mass is used.
- Therefore, the molecular mass of a molecule containing heavier isotopes can be few units higher than the molar mass.
- Otherwise, the value of the molar mass and molecular mass is quiet the same for a similar molecule; only the units are different. The unit of the molecular mass is amu, and the unit of the molar mass is gmol-1.
- It is accurate to use the molecular mass in calculations of higher amounts of molecules than using the molar mass.
- Molar mass is a measurement, which can be given to atoms, molecules or compounds. But molecular mass is only determined in the molecules. If it is the mass of an atom, a different terminology called atomic mass is used.
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