Aballoon was filled to a volume of 2.50 l when the temperature was 30.0∘c. what would the volume become if the temperature dropped to 11.0∘c.

2.34 L

Explanation:

Assuming the pressure inside the balloon remains constant, then we can use Charle's law, which states that for a gas kept at constant pressure, the ratio between the volume of the gas and its temperature remainst constant:

where in this problem we have:

is the initial volume

is the final volume

is the initial temperature

is the final temperature

Substituting into the equation and solving for V2, we find the final volume:

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