- #1
Big-Daddy
- 343
- 1
This is a more general question: is it always true for a mixture that if we define M(average) such that m(total) = n(total) * M(average), where n(total) is the total number of moles of species in the mixture (summed over all species) and m(total) is the total mass of the mixture, then M(average) = Ʃ (x(Species) * M(species)) where M(species) is the relative molecular mass of that species and x(Species) is the mole fraction of that species in the mixture, and the summation occurs over all species in the mixture? Is this true for any mixture, including solid phase substances?