partial function averageMolarMass_xi
extends TILMedia.BaseClasses.PartialGasFunction;
input TILMedia.Gas.Types.BaseGas gasType "Gas type" annotation(
choicesAllMatching = true);
input SI.MassFraction[:] xi = TILMedia.Internals.massFraction_mixingRatio(gasType.mixingRatio_propertyCalculation) "Mass fractions of the first nc-1 components";
output SI.MolarMass M "Average molar mass";
end averageMolarMass_xi;