If the molecular weight of air is 28.9, what is the density of air at atmospheric pressure and a temperature of 281 K?

If the molecular weight of air is 28.9,what is the density of air at atmosphericpressure and a temperature of 281 K?1 atm = 1.013 × 105 N/m2 , the mass ofa proton is 1.67262 × 10−27 kg , Avogadro’snumber is 6.02214 × 1023 mol−1 and k =1.38065 × 10−23 N · m/K.Answer in units of kg/m3.

=================================================================If the molecular weight of air is 28.9,what is the density of air at atmosphericpressure and a temperature of 281 K?1 atm =...