A gas occupies a volume of 300 `cm^(3)` at `27^(@)C` and 620 mmHg pressure . The volume of gas at `47^(@)C` and 640 mmHg pressure is

Options

A. ` 260 cm^(3)`
B. `310 cm^(3)`
C. `390 cm^(3)`
D. `450 cm^(3)`

Answer

B

Explanation

`(P_(1)V_(1))/(T_(1))=(P_(2)V_(2))/(T_(2))rArr (620xx300)/(300)=(640xxV_(2))/(320)`
`V_(2)=(620x300xx320)/(640xx300)=310 cm^(3)`