Question

What is difference between molecular mass and molar mass

Answer 1

Molecular Weight is the weight given in amu of an atom or molecule. For H2O, the MW is 18 amu or 3.0 x 10 ^ -23 g. Molar Weight is the weight, usually in grams of 6.02 x 10 ^ 23 measurements which happens to be equal to the MW of the molecule (or atomic wt. of the atom) , and for water is 18.0 g.