# A soda bottle is flexible enough that the volume of the bottle can change even without opening it. If you have an empty soda bottle that is 2 L at room temperature of 25°C, what will the new volume be if you put it in your freezer at -4°C?

You tell us. You use Charles' Law, $V \propto T$, where $T$ is quoted as an absolute temperature
Given this proportionality, ${V}_{1} / {T}_{1} = {V}_{2} / {T}_{2}$, where $T$ is in units of $\text{degrees Kelvin}$, and solve for ${V}_{2}$.
$\text{Degrees Kelvin "=" Degrees Centigrade + } 273.15 \cdot K$