Consider the sketch below. Each square in bulb A represents a mole of atoms X. Each circ...

Consider the sketch below. Each square in bulb A represents a mole of atoms X. Each circle in bulb B represents a mole of atoms Y. The bulbs have the same volume, and the temperature is kept constant. When the valve is opened, atoms of X react with atoms of Y according to the following equation:

The gaseous product is represented as represents one mole of product.

(a) If P_A = 2.0 atm, what is P_B before the valve is opened and the reaction is allowed to occur? What is P_A + P_B?

(b) Redraw the sketch above to represent what happens after the valve is opened.

(c) What is P_A? What is P_B? What is P_A + P_B? Compare your answer with the answer in part (a).