Question

# Molar mass of ethanol (C2H5OH) is:(Atomic masses: C = 12 u, H = 1 u, O = 16 u)

A
34
B
38.9
C
46
D
45.1
E
62.1
Solution
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#### Molar mass of ethanol (C2H5OH) =(2×atomic mass of carbon)+(6×atomic mass of hydrogen)+(1×atomic mass oxygen)=2(12)+6(1)+1(16)=46 g/mol

14
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