a balloon filled with hydrogen gas is left inside a car, on a hot summer day. What would happen to the volume and pressure of hydrogen gas

Based on the information given, there will be an increase in the volume and pressure of the gas that's inside the balloon.

It should be noted that the pressure of a gas rises when the temperature increases.

Therefore, in such a case, when a balloon filled with hydrogen gas is left inside a car, on a hot summer day, there will be an increase in the volume and pressure of the gas that's inside the balloon.

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The volume and pressure of the gas inside the balloon would increase.

Explanation:

The pressure of a gas increases as the temperature also increases, because it promotes a greater agitation of the gas molecules, which when trobar one in the other promote the increase of the pressure. Similarly, this movement also promotes an increase in volume, as it expands the walls of the container that holds the gas.

In the case of the question above, we can see that the balloon is inside the car, which naturally has a high temperature. This temperature is intensified due to the hot summer day.

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