Question

At 7.0°C, the volume of a gas is 49 mL. At the same pressure, its volume is 74 mL at what temperature?

Answer 1

We use Charles' Law to give `T_2~=423*K`

Explanation:

Chalres' law states that at constant pressure, `VpropT`, i.e. `V_1/T_1=k` or `V_1/T_1=V_2/T_2`, units of absolute temperature are (reasonably) used, and we could use any units of volume (`"pints, bushels, pecks?"`), because the volumes cancel out.

`T_2=(T_1V_2)/V_1` `=` `(280*Kxx74*mL)/(49*mL)` `=` `??K` `=??""^@C`