The initial temperature of a gas 1s 27 to temperature `80 cm^(3)` of the gas should be heated to increases the volume by 25%.

Explanation

`v_(1)80 cm^(3), v_(2)+80+(25)/(100)xx80=100 cm^(3)`
`T_(1)=27+273=300 K, T_(2)=?`
`(v_(1))/(T_(1))=(v_(2))/(T_(2)) or T_(2)=(T_(1)V_(2))/(V_(1))=(300xx100)/(80)`
`:. T_(2) =375 K=375-273=102^(@)C`
`:. T_(2)=102^(@)C`
`:. T_(2)=102^(@)C`