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If the molecular weight of air is 28.9, what is the density of air at atmospheric pressure and a temperature of 328.2 K? 1 atm

 If the molecular weight of air is 28.9, what is the density of air at atmospheric pressure and a temperature of 328.2 K? 1 atm = 1.013 x 105 N/m, the mass of a proton is 1.67262 x 10 -27 kg, Avogadro's number is 6.02214 x 1023 mol-1 and k = 1.38065 x 10-23 N.m/K. Answer in units of kg/m

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