Which statement describes how molecular mass and molar mass differ?
A) Molecular mass is the mass of one molecule, whereas molar mass is the mass of one mole.
B) Molar mass is measured in atomic mass units, whereas molecular mass is measured in grams per mole.
C) A molar mass is the mass of one formula unit, whereas molecular mass is the mass of one molecule.
D) A molar mass is the mass of one molecule, whereas molecular mass is the mass of one formula unit.
E) There is no difference between these terms.

Question

Quizplus · Accepted Answer

Molecular mass refers to the mass of a single molecule, calculated by summing the atomic masses of all atoms in the molecule, and is typically measured in atomic mass units (amu). Molar mass, on the other hand, is the mass of one mole (6.022 x 10^23 particles) of a substance, and is measured in grams per mole (g/mol). This makes molar mass a larger scale concept useful for laboratory measurements, while molecular mass is a more theoretical or molecular-scale concept.

Which Statement Describes How Molecular Mass and Molar Mass Differ