In the universal gas constant is 8314 J/kmol-K, the characteristic gas constant of the mixture (in J/kg-K) is _

Question

A mixture of ideal gases has the following composition by mass:

N2	O2	CO2
60%	30%	10%

In the universal gas constant is 8314 J/kmol-K, the characteristic gas constant of the mixture (in J/kg-K) is ____________