Question: 2 . ( 2 0 points ) A gas mixture consists 9 0 . 0 % methane, 7 . 3 % ethane, and 2 .

2.(20 points) A gas mixture consists 90.0% methane, 7.3% ethane, and 2.7% propane by volume.
a. Calculate the mass fractions of all components in the fuel.
b. Calculate the higher heating value of this fuel in kJ/g.

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