Question

The volume of a gas is 250 mL at 3.5 atm pressure. What will the volume be when the pressure is reduced to 0.75 atm. assuming the temperature remains constant?

Answer 1

we have three gas laws
1. PV = k (temperature held constant)
2. V/T = k (pressure held constant)
3. P/T= k (volume held constant)
And the combined gas law is PV = kT
ANd the mole gas law is PV = nRT
we assume ideal gases
http://chemistry.bd.psu.edu/jircitano/gases.html

Answer 2

I got 1166.67 mL

Answer 3

P1*V1 = k
P2*V2 = k since it is the same temperature
P1 *V1 = P2*V2
(3.5 atm) ( 250 ml) = (.75 ml) (x)
So x = 1166.67