Question: A 30 percent (by mass) ethane and 70 percent methane mixture is to be blended in a 100-m3 tank at 130 kPa and 25oC. If

A 30 percent (by mass) ethane and 70 percent methane mixture is to be blended in a 100-m3 tank at 130 kPa and 25oC. If the tank is initially evacuated, to what pressure should ethane be added before methane is added?

70% CH4 30% C2H6 (by mass) 100 m3 130 kPa, 25 C

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