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Charlie Charlie
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12 years ago
Describe (using what you know about gases) why a can of compressed air gets cold after you use it to clean your keyboard.
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12 years ago
When you compress air (or any gas), it heats up. When you dilate it (or lower its pressure), it cools down. That's why a can of compressed air gets really cold when you spray? it continuously.
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12 years ago
When you expand a parcel of air, it drops in temperature. That's why a can of compressed air gets cold when you squeeze the button.
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