Return mole fractions from mass fractions X
function massToMoleFractions extends Modelica.Icons.Function; input SI.MassFraction X[:] "Mass fractions of mixture"; input SI.MolarMass[:] MMX "molar masses of components"; output SI.MoleFraction moleFractions[size(X, 1)] "Mole fractions of gas mixture"; end massToMoleFractions;