43,4gHgO-----x
217gHg-----1mol
x=0,2molHgO
2molHgO ------1mol O2
0,2molHgO-----x
x=0,1mol O2
0,1molO2-----100%
x--------75%
x=0,075mol O2
pV=nRT
V=nRT/p
V=0,075*83,1*360K/1020hPa=2,2dm3
