Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

What is the mass of 1 mole of propane (C₃H₈)?
Options
A 30.1 g
B 44.1 g
Correct Answer
C 56.1 g
D 72.0 g
Correct Answer

Option B is the correct answer.

Detailed Explanation

Molar mass of C₃H₈ = (3 × atomic mass of C) + (8 × atomic mass of H) = (3 × 12.01) + (8 × 1.008) = 36.03 + 8.064 = 44.094 g/mol, approximately 44.1 g/mol.

Hint

Add up the atomic masses of all atoms in the molecule.

Question Info