Hi guys. Anybody got a shortcut, that doesn't require a simulator, for calculating k=Cp/Cv for a gas mixture? Gas is 65% CO2, 35% CH3, water-saturated. My rules of thumb say stuff like Cp=(9/2)R and Cv=(7/2)R for "triatomic gas", but that doesn't help much for this gas mixture. And Cp-Cv=R gives me negative values for this particular gas, so that's out. I am within ideal gas approximation range if that helps. Thanks guys!
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