Boyle's+law+-+Craig+and+Cody


 * __Boyle's Law__**

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Boyle's law states that the volume of a fixed mass of gas varies inversely with the pressure at constant temperature. The equation to represent this law looks like: P1 x V1 = P2 x V2. P1 and V1 describe the initial conditions while P2 and V2 describe a different set of conditions. Given three of the four values, one can use the equation to calculate the missing value for a system at constant temperature.

A sample of oxygen gas has a volume of 150.0mL when its pressure is 0.947atm. What will the volume of the gas be at a pressure of .987atm if the temperature remains costant?
 * Example Problem:**

__Step One:__ Given: V1 of O2 = 150.0mL; P1 of O2 = 0.947; P2 of O2 = 0.987 Looking For: V2 of O2 in mL

__Step Two:__ Rearange the equation for Boyle's law in order to solve for V2 V2 = (P1V1) / P2

__Step Three:__ Substitute the given values. (0.947atm)(150.0ml) / .987atm = 144mL O2

When the pressure is increased slightly at constant temperature, the volume decreases slightly.
 * Conclusion:**

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