Boyle's+Kosky

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Boyles Law


 * Boyle's law** states that the volumes of a fixed mass of a gas varies inversely with the pressure at constant temperature. So, when the volume increases, the pressure decreases.

Robert Boyle was the first to discover this relationship in one of his experiments. He noticed that when the volume was increased by double its original size, the pressure dropped by 1/2. As one variable increases, the other decreases. The pressure of a gas is caused by the molecules hitting the sides of the container walls. Suppose the volume of the container increases. THis will allow for more space for the particles to move in, creating less pressure.

PV=k (P is the pressure, V is the volume, and k is the constant.) P1 V1=P2 V2 (P1 and V1 represent the initial conditions, P2 and V2 represent a different set of conditions.)

Given three values you can use them to calculate the fourth value for a system at constant temperature.

So, if you were told that a container contains 2 atms of gas at a volume of 3 ml, and you wanted to find the volume of a second container at 1 atm, you would set the problem up like this:

2atms x 3ml = 1atm x ? 2atms x 3ml/ 1 atm= **6ml** This picture depicts how when the volume increases, there is more room for the molecules to move resulting in lower pressure.