Natural gas is a mixture of hydrocarbons, primarily methane
1CH42 and ethane 1C2H62. A typical mixture might have
Xmethane = 0.915 and Xethane = 0.085. Let’s assume that we
have a 15.50 g sample of natural gas in a volume of 15.00 L
at a temperature of 20.00 °C.
(a) How many total moles of gas are in the sample?
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