Where; |
P is the pressure of the system,
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V is the volume of the gas,
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k a constant (representative of the pressure and volume of the system).
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So long as temperature remains constant at the same value the same amount of energy given to the system persists throughout
its operation and therefore, theoretically, the value of k will remain constant.
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Forcing the volume V of the fixed quantity of gas to increase, keeping the gas at the initially measured temperature, the
pressure P must decrease proportionally. Conversely, reducing the volume of the gas increases the pressure.
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Boyle's law is commonly used to predict the result of introducing a change, in volume and pressure only, to the initial state
of a fixed quantity of gas. The "before" and "after" volumes and pressures of the fixed amount of gas, where the "before"
and "after" temperatures are the same (heating or cooling will be required to meet this condition), are related by the equation:
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