Question: A 3 0 percent ( by mass ) ethane and 7 0 percent methane mixture is to be blended in a 1 0 0 m

A 30 percent (by mass) ethane and 70 percent methane mixture is to be blended in a 100 m tank at 130 kPa and 25C. If the tank is initially evacuated, to what pressure should ethane be added before methane is added?

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