how many molecules per cc of gas would contain at -33 degree centigrade and 726 torr - Chemistry - Liquid and Gaseous States

Question

how many molecules per cc of gas would contain at -33 degree
centigrade and 726 torr

Vartika Jain · Accepted Answer

Dear Student,

PV=nRTHere, P=726 torr=0
95 atmT=-33°C=240 KV=1 cm3=10-3 LR=0
0821 Latm K-1mol-1n=PVRTor, n=0 95×10-30
0821×240=0
048×10-3 molNow, 1 mol of gas contain 6
022×1023 molecules So, 0
048×10-3 mol of gas contains 0
048×10-3×6 022×1023=2 8×1019 molecules