In a fixed amount of gas, when pressure increases, what happens to volume?

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Multiple Choice

In a fixed amount of gas, when pressure increases, what happens to volume?

Explanation:
For a fixed amount of gas, with temperature held constant, pressure and volume are inversely related. This means the product PV stays the same (PV = constant). When you increase pressure, the gas is compressed, so the volume must decrease to keep PV constant. Therefore the correct outcome is that volume decreases. If the pressure rises but volume stayed the same or increased, the PV product wouldn’t stay constant under these conditions.

For a fixed amount of gas, with temperature held constant, pressure and volume are inversely related. This means the product PV stays the same (PV = constant). When you increase pressure, the gas is compressed, so the volume must decrease to keep PV constant. Therefore the correct outcome is that volume decreases. If the pressure rises but volume stayed the same or increased, the PV product wouldn’t stay constant under these conditions.

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