Intilal                                             Â
Final
P1 =
2.1atm                               Â
  P2 =
T1Â Â = 21C0 = 21+ 273
=294KÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
T2Â Â = 87C0Â Â = 87 + 273 = 360K
            Â
P1/T1Â Â Â =Â Â Â Â P2/T2
            Â
P2Â Â Â = P1T2/T1
                     Â
= 2.1*360/294 = 2.54atm
2.
Intial                                                           Â
Final
V1 =
22.4ml                                                Â
V2 =
T1Â Â = 0C0 = 273
KÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
T2 = 70C0 = 70 + 273 = 343K
                     Â
V1/T1Â Â = V2/T2
                     Â
V2Â Â Â Â Â Â = V1T2/T1
                                Â
= 22.4*343/273Â Â = 28.143L