1.

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

Answer»

400 c.c.
510 c.c.
310 c.c.
350 c.c.

Solution :Given INITIAL volume `(V_(1))= 300C c `,initial temperature `=(T _(1)0= 27^(@)C = 300 K `, initial pressure `(P_(1)) = 620 mm,` final temperature `T_(2)= 47^(@)C = 320 K` and final pressure`=(P_(2))= 640 mm`. We know from the general gas equation .
`(P_(1)V_(1))/(T_(1))=(P_(2)V_(2))/(T_(2))=(620 xx 300)/(300)=(640 xx V_(2))/(320)implies V_(2) = 310 c c`


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