26. For a mixture of gases containing n1 moles of molecular mass m1 and n2 moles of molecular mass m2 then show that m(mix)= (n1m1+n2m2)/n1+n2=(n1+n2)/gamma mix-1 =(n1/gama1-1) +(n2/gamma 2-1) Where gamma 1 and gamma 2 are adiabatic exponents of gases 1 and 2 respectively

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