Question: A sample of natural gas is 85.2% methane, CH4, and 14.8% ethane, C2H6, by mass. What is density of this mixture at 18oC and 771

A sample of natural gas is 85.2% methane, CH4, and 14.8% ethane, C2H6, by mass. What is density of this mixture at 18oC and 771 mmHg?

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