A gas contains 91% methane, 5% ethane, and 4% propane and no water a. What is the Wobbe number of the mixture? b. If the gas is blended with air to obtain a gross heating value of 1,000 Btu/scf (37.3...

A gas contains 91% methane, 5% ethane, and 4% propane and no water a. What is the Wobbe number of the mixture? b. If the gas is blended with air to obtain a gross heating value of 1,000 Btu/scf (37.3 MJ/m3 ) what will be the air concentration (mol %)? c. If the required Wobbe number for the final gas mixture is 1,130–1,280 Btu/scf (44.5–50.4 MJ/Nm3 ) will the Wobbe number be in the required range?