ans)
from above data that
given that
Initial pressure P = 353 Kpa
Initial temperature T = 14 o
C
                             Â
= 14 + 273
                             Â
= 287 K
Final temperature T ' = 63o
C
                                =
63+ 273
                              Â
= 336 K
At constant volume , P ' / P = T ' /
T
From this P ' = (T' /T ) P
                   Â
= 413.3 kPa
Initial volume V =Â Â 21.0
l
Final volume V ' = 21.9 l
From the relation PV = nRT
                     PV
/T = constant
                  P'V'/T'
= PV/TÂ Â Â Â
From this P ' = PVT' / V'T
                   Â
= (353*21.0*336) /(21.9 * 287 )
                   Â
= 396.3 kPa
