Combined.+todd.grady

=Combined Gas Law=

When a gas is effected in all three areas of volume temperature and pressure, you need to use this law. It combines gay-lussaac's law, charles law, and boyles law. In the equation you see all three equations fomed as one, you can solve for any of the six variables in it. The equation is... __P1V1/T1 = P2V2/T2

Sample Problem__

If u have a helium gas in a balloon that has avolume of 50 mL with the pressure of 1 atm at 275 degree kelvin. What will the volume be with the pressure at 2 atm and the temperature at 273?

p1v1/t1=p2v2/t2 turns into v2=p1v1t2/t1p2

So you plug the numbers in... 50 mL x 1 atm x 273 K / 275 K x 2 atm = v2

So you do the calculations and get.... __**v2 = 24.8 mL**__ And that is your final answer