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Match each quantity with its number of moles:

A1-A, 2-B, 3-C
B1-B, 2-A, 3-C
C1-C, 2-B, 3-A
D1-A, 2-C, 3-B
Answer & Solution
Correct answer: A. 1-A, 2-B, 3-C
44 g CO2 = 1 mol. 4 g He = 1 mol. 11.2 L O2 = 0.5 mol.
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