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Why does opening the air valve of a tire at a constant temperature decrease the pressure?
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5 votes
Why does opening the air valve of a tire at a constant temperature decrease the pressure?

User Andreas Hausladen
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2 Answers

3 votes
While air is being released, your air per cubic meter decreases, therefore lessening the pressure.
User Divyesh Jesadiya
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8.0k points
5 votes
The number of molecules decreases.
User DJViking
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