Answer: 0.358 atm
Step-by-step explanation:
This is from Gas Laws in Chemistry. Pretty simple.
You've been given V = 5.5 L, n = 2 mol, and T = 12
It is also given that R = 0.0821 for atm.
Plugging in, you get the equation: 5.5P = 2 x 12 x 0.0821
Solving for P, you get about: 0.358 atm.
Thats the pressure!