X, Y and Z are all gases that behave ideally and react according to the equation : X(g) + 2Y(g) = 2Z(g)

When 3.0 mol of X and 3.0 mol of Y are placed inside a container with a volume of 1.0 dm2 they react to form the maximum amount of Z.

the final temperature of the reaction vessel is 120 C
What is the final pressure inside the reaction vessel?

a) 4.49×10^8 Pa

b) 9.80×10^8 Pa

c) 1.47×10^7 Pa

d ) 1.96×10^7 Pa