Which gas law applies when the temperature is constant and the amount of gas remains fixed?

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Multiple Choice

Which gas law applies when the temperature is constant and the amount of gas remains fixed?

Explanation:
When temperature is held constant and the amount of gas is fixed, pressure and volume shift inversely: increasing the volume lowers the pressure, and decreasing the volume raises the pressure. This is Boyle’s law, which states that P is proportional to 1/V (or PV remains constant when n and T are fixed). The underlying idea comes from the ideal gas relationship PV = nRT: if n and T don’t change, the product PV stays the same, so pressure and volume trade off reciprocally. The other laws involve changes in temperature, amount, or both, not just pressure and volume under constant temperature and fixed amount.

When temperature is held constant and the amount of gas is fixed, pressure and volume shift inversely: increasing the volume lowers the pressure, and decreasing the volume raises the pressure. This is Boyle’s law, which states that P is proportional to 1/V (or PV remains constant when n and T are fixed). The underlying idea comes from the ideal gas relationship PV = nRT: if n and T don’t change, the product PV stays the same, so pressure and volume trade off reciprocally. The other laws involve changes in temperature, amount, or both, not just pressure and volume under constant temperature and fixed amount.

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