For many purposes we can treat propane \( \left(\mathrm{C}_{3} \mathrm{H}_{8}\right) \) as an ideal gas at temperatures above its boiling point of \( -42 .{ }^{\circ} \mathrm{C} \).
Suppose the temperature of a sample of propane gas is lowered from \( 30.0^{\circ} \mathrm{C} \) to \( 0^{\circ} \mathrm{C} \), and at the same time the pressure is increased by \( 10.0 \% \).
\begin{tabular}{|l|l|}
\hline Does the volume of the sample increase, decrease, or stay the same? & O decrease \\
\hline \begin{tabular}{l}
If you said the volume increases or decreases, calculate the percentage change in \\
the volume. Round your answer to the nearest percent.
\end{tabular} & \( \square \% \) \\
\hline
\end{tabular}
