You have 29 moles of methanol (1) mixed with 42 moles of ethanol (2). What is the mole fraction (to 2 decimal places) of this mixture (x1)?
A. 0.41
B. 0.29
C. 0.42
D. 0.59
E. 0.69
A. Correct. This is a simple calculation, but you must completely understand mole fractions for the rest of the chapter to make any sense.
B. Incorrect. This would be true ONLY if the total amount of substance of the mixture was 100.
C. Incorrect. This would be the mole fraction of component 2 (ethanol) ONLY if the total amount of substance of the mixture was 100 moles.
D. Incorrect. This is the mole fraction of component 2 (ethanol). Try again.
E. Incorrect. Check your arithmetic.
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