What is the difference between molar mass and molecular mass?

Question

Luna Chen · Accepted Answer

Discussed below

The molecular mass is a relative mass of a molecule of a substance ( a compound or an element )measured by the ratio of the mass of one molecule of the substance to the mass of #1/12th# part of #""_6^12C# atom. It is a unitless quantity,being the ratio of two masses. The tiny constant mass of #1/12th# part of the mass of #"_6^12C# atom is also considered as unit of mass and is known as ‘amu’ or ‘u’. #1"u or amu"=1.6xx10^(-24)g=1/Ng# Where N = Avogadro’s Number. The molecular mass of Carbon dioxide =44 But actual mass of one molecule of carbon dioxide molecule is # 44u# The molar mass of a substance (a compound or an element) is the mass of 1 mole or Avogadro’s number of the molecules of that substance expressed in #g/(mol)# unit The molar mass of carbon dioxide is #44g/(mol)#

Cooper Adams · Answer

undefined Molar mass refers to the mass of one mole of a substance and is typically expressed in grams per mole (g/mol). Molecular mass, on the other hand, refers to the mass of a single molecule of a substance and is expressed in atomic mass units (amu) or unified atomic mass units (u). While molar mass considers the entire sample of a substance, molecular mass focuses on the mass of individual molecules within that substance.