Question

1 multiple choice 1 point
what are the units of molar mass?
grams
molecules
g/mol
amu
2 true or false 1 point
the molar mass is the mass of one mole of a given substance.
true
false
3 true or false 1 point
atomic mass and molecular mass have the same units.
true
false

Explanation:

Question 1

Step1: Recall molar mass definition

Molar mass is mass per mole of a substance.

Step2: Analyze units

• Grams: Unit of mass, not molar mass (molar mass needs per mole).
• Molecules: Unit of amount (count), not mass.
• g/mol: Mass (grams) per mole, matches molar mass definition.
• amu: Atomic mass unit, for atomic/molecular mass, not molar.

Molar mass is defined as the mass of one mole of a substance (e.g., grams per mole, where the mass is for 1 mole). This matches the given statement.

Atomic mass (of an atom) and molecular mass (of a molecule) both use atomic mass units (amu) or unified atomic mass units (u). So their units are the same.

Answer:

C. g/mol

Question 2