A certain mass of gas occupies a volume of 300 c.c.300 c.c. at 27°C and 620 mm pressure. The volume of this gas at 47°C and 640 mm pressure will be

Given initial volume (V1) = 300cc, initial temperature (T1) = 27° C = 300K, initial pressure (P1) = 620mm,final temperature T2 = 47°C = 320K and final pressure (P2) = 640mm.We know from the general gas equation P1V1T1=P2V2T2=620×300300=640×V2320⇒V2=310cc