91Ó°ÊÓ

We need to compare an initial and final volume on the different condition of temperature.

Using Charle's Law : $\frac{V_1}{T_1}=\frac{V_2}{T_2}$,

$$\begin{gathered} V_1=505mL \\ {T}_1=15°C \\ {T}_2=37°C \end{gathered}$$

Now, we can clearly see that final temperature is greater than initial temperature so according to Charle's law final volume will be greater than initial volume.

We need to compare an initial and final volume on the different condition of temperature.

The heater that heats the air in a hot-air balloon is switched off, according to the query.
As a result, there will be no temperature change.
As a result of Charle's law, there will be no change in volume.

We need to compare an initial and final volume on the different condition of temperature.

We all know what happens when a helium-filled balloon is left in a hot car at an amusement park.
As a result, the ultimate temperature will be higher than the initial temperature.

According to Charles's law $\frac{V_1}{T_1}=\frac{V_2}{T_2}$

so final volume will be more than initial volume.