Calculate the pressure exerted by 9 kg of air at a temperature of 20℃ if the volume is 0.8m3. Assuming ideal gas laws are applicable.

(a) 946 kN/m^2

(b) 1892 kN/m^2

(c) 1419 kN/m^2

(d) None of the mentioned

I got this question during an internship interview.

This interesting question is from Thermodynamic Properties & Compressibility topic in portion Properties of Fluids of Fluid Mechanics