Question

Is molecular mass and molar mass or same?

Answer 1

Answer:

NO

Explanation:

Molecular mass:

Molecular mass of a compound is defined as the mass of one molecule. Molecular mass differs because of the isotopes. The unit in which molecular mass is measured is amu. Amu stands for atomic mass units.

Molar mass:

It is defined as the mass of substance for a given amount. The amount of molecules or atoms or compounds present in one mole of substance is given by this. Molar mass SI unit is g/mol

To make you understand how molar mass and Molecular mass is different from each other, here are the some of the major differences molar mass and molecular mass:

Difference between Molar mass and Molecular mass

MOLAR MASS MOLECULAR MASS

Refers to mass of a mole of a substance Refers to the mass of molecules

Also known as molecular weight It determines the mass of a single molecule

SI unit is g/mol to use in higher calculations Measured in amu

It is defined as the mass of Avogadro number of atoms/molecules or compounds No particular melting point

Measurement given to compounds, atoms or molecules Determined only in molecules

Less accurate than molecular mass Accurate to use in higher calculations

Example: Mass of 1 mole of oxygen is 15.9994 grams. Therefore, the molar mass = 15.9994 g/mol Example:

Molecular mass of Ca(OH)2 = 74 atomic mass units

Answer 2

No.

Difference between molar mass and molecular mass

Molar Mass

• Refers to mass of a mole of a substance

• Also known as molecular weight.
• SI unit is g/mol to use in higher calculations.
• It is defined as the mass of Avogadro number of atoms/molecules or compounds.
• Measurement given to compounds, atoms or molecules.
• Less accurate than molecular mass.
• Example: Mass of 1 mole of oxygen is 15.9994 grams. Therefore, the molar mass = 15.9994 g/mol

MOLECULAR MASS

• Refers to the mass of molecules.
• It determines the mass of a single molecule.
• Measured in amu.
• No particular melting point.
• Determined only in molecules.
• Accurate to use in higher calculations.
• Example: Molecular mass of Ca(OH)2 = 74 atomic mass units