Question

A gas at `34` `""^@C` expressed a volume of `10*L` in a piston; what is the new volume at `48` `""^@C`?

Answer 1

Old Charles' Law holds that `V_1/T_1=V_2/T_2`, moles and pressure constant.........

Explanation:

Pressure is a constant here, but we know (or should know) that `1*atm` pressure will support a column of mercury that is `760*mm*Hg` tall; this relationship is linear: 1/2 an atmosphere will support a column of mercury that is `380*mm*Hg` tall. A mercury manometer is thus useful to measure laboratory pressures of confined gases.

We also must employ the absolute temperature scale..........

And so `V_2=V_1/T_1xxT_2=(10*L)/(307*K)xx348*K~=11*L`