a.
Initial                                       Â
Final
    P1 =
772torr                         Â
P2 = 549torr
    V1 =
814ml                           Â
V2 =
    T1  = 22.7+273 =
295.7KÂ Â Â Â Â Â T2 = 22.7+273 =
295.7K
         Â
P1V1/T1Â Â Â Â =Â Â P2V2/T2
               Â
V2Â Â Â Â Â Â Â Â
=Â Â Â Â P1V1T2/P2T1
                             Â
= 772*814*295.7/549*295.7Â Â Â = 1144.64ml
b.
Initial                                       Â
Final
    P1 =
697torr                         Â
P2 = 858torr
    V1
=448ml                           Â
V2 =
    T1  = 26.4+273 =
299.4KÂ Â Â Â Â Â T2 = 26.4+273 =
299.4K
         Â
P1V1/T1Â Â Â Â =Â Â P2V2/T2
               Â
V2Â Â Â Â Â Â Â Â
=Â Â Â Â P1V1T2/P2T1
                              Â
= 697*448*299.4/858*299.4Â Â = 363.93ml
>>>>answer
c.
Initial                                                Â
Final
P1Â Â =
0.521atm                              Â
P2 =
V1 =
12.9LÂ 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
V2 = 22.1L
T1Â Â = 25.3+273 =
298.3KÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
T2 = 25.3+273 = 298.3K
               Â
P1V1/T1Â Â Â =Â Â Â P2V2/T2
                    Â
P2Â Â Â Â Â Â Â Â
=Â Â Â P1V1T2/T1V2
                                  Â
=Â Â 0.521*12.9*298.3/298.3*22.1Â Â Â =
0.304atm >>>>answer