Calculate the number of moles of aspirin,C9H8O4,in 4.0 gram sample.
A) 2.2 × 10-4 moles
B) 2.2 moles
C) 4.6 × 10-3 moles
D) 0.022 moles
E) 180 moles
Correct Answer:
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Q12: The molar mass of butane,C4H10,is _ grams.
A)22.01
B)49.05
C)52.08
D)58.12
E)68.24
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A)8.8
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