Answer:
(2) Adding more O2(g) would shift the equilibrium to the right because a higher concentration of oxygen is offered than its initial position, therefore more products have to be yielded to maintain equilibrium.
Explanation:
How am I supposed to help you if there's not picture of what the problem is
The problem the answer u are looking for a
Al is the reducing agent.That is answer B is the above answer
Al acts as a strong reducing agent. It reduces crO3 to form cr while Al is oxidized to Al2O3. Al is capable to reduce cr since Al is higher in reactivity series than cr.
I believe the answer is A, if they have a stronger connection lower the vapor pressure so higher the boiling point