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CHM 101 CHM 101 Past Questions Objective Question

Question

The molar mass of ethanol (C₂H₅OH) is approximately:
Options
A 34.0 g/mol
B 46.07 g/mol
Correct Answer
C 50.1 g/mol
D 60.0 g/mol
Correct Answer

Option B is the correct answer.

Detailed Explanation

Ethanol formula is C₂H₆O. Molar mass = (2×12.01) + (6×1.008) + 16.00 = 24.02 + 6.048 + 16.00 = 46.068 g/mol, approximately 46.07 g/mol.

Hint

Add the atomic masses for two carbons, six hydrogens, and one oxygen.

Question Info