Question 4

Natural gas is piped from the well at 300 K and 400 kPa. The gas is found to contain 93.0% methane, 4.5% ethane and the rest nitrogen. Calculate the following:
(a) The partial pressure of nitrogen
(b) The pure-component volume of ethane in 10 m³ of the gas
(c) The density at standard condition in kg/m³
(d) The density of the gas as piped in kg/m³
(e) The average molecular weight of the gas
(f) The composition in weight percent