A catalyst added to a system going to equilibrium does what?

A) Raises the activation energy of the reverse reaction
B) Lowers the activation energy for the forward reaction
C) Increases each reaction's rate, allowing equilibrium to be reached faster
D) Nothing

How does the oxidation number of C change in the following reaction: CH₄ + 2 O₂ → CO₂ + 2 H₂O?

A) There is not enough information to tell.
B) It does not change.
C) From -2 to +2
D) From -4 to +4

What is the volume of the product in the following reaction:
O₂ (g) + 2H₂ (g) → 2 H₂O (g) if the reactants are 1 liter of oxygen and 2 liters of hydrogen?

A) 2 liters
B) 3 liters
C) 1 liter
D) Not enough information to tell

What is one of the main proteins found in blood plasma, to which poisons can bind?

A) Hemoglobin
B) Albumin
C) Retinal
D) None of the above