
Xingze M. answered 11/01/20
Recent PhD in theoretical physics
a) using ideal gas law, PV=nRT => n=PV/RT=10^5*0.36/8.31/(273+22)=14.6 mol
The number of molecules is 14.6* 6.02*10^23=8.8*10^24
b)1) same formular, P=(273+5)/(273+22)*10^5=94237 pa
2) Dif(P)=5763Pa. the force on the door is thus 5763*0.72=4.149KN