Chemmistry gas laws
posted by tori .
CH2==Ch2(g) > CH4(g) + C (graphite)
If the decomposition begina at 10 degrees C and 50.0 atm with a gas density of 0.215 g/mL and the temperature increases by 950K, what is the final pressure of the confined gas (ignore the volume of graphite and use the van der waals equation)

So what's your problem? Just plug into the van der Waals equation.

I don't know how to throw density into the equation.

scratch that.. i really don't get any of it. formula I have is: (P + (n^2a)/V^2)(Vnb) = nRT
what I can fill in is (P + (n^2(2.25))/V^2)(Vn(.0428)) = n(.0821)(950)