Calculate the ΔG°rxn using the following information. 4 HNO3(g) + 5 N2H4(l) → 7 N2(g) + 12 H2O(l) ΔG°rxn = ? ΔH°f (kJ/mol) -133.9 50.6 -285.8 S°(J/mol∙K) 266.9 121.2 191.6 70.0  

Use the free energies of formation given below to calculate the equilibrium constant (K) for the following reaction at 298 K. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l) K = ? ΔG°f (kJ/mol) -110.9 87.6 51.3 -237.1  

In a lead-acid storage battery, PbO2 is reduced to

Calculate ΔS°rxn for the following reaction. The S° for each species is shown below the reaction. C2H2(g) + H2(g) → C2H4(g) S°(J/mol∙K) 200.9 130.7 219.3  

Refer back to the truth table in the question above that represents the following argument: (pq)  r ~r ~q                   ~p   Which rows represent the argument’s premise(s)?

The truth table below represents the following argument. Look at the truth table carefully, and answer the questions below. (pq)  r ~r ~q                    ~p     C1 C2 C3 C4 C5 C6 C7 C8   p q r ~q ~r pq (pq) r ~p R1 T T T F F T   F R2 T T   F T T F F R3 T F T T   F T F R4 T F F T T F T F R5 F T T F F T T T R6 F T F F T T F T R7 F F T T F T T T R8 F F F T T T F T What is the correct truth value for the missing value in C7, R1?

On scratch paper, balance the following redox reaction in acidic solution, and then answer the question below. NO(g) + Pb2+

Which of the following statements about the anode in an electrochemical cell is true?

Which one of the following ions is classified incorrectly?

Which one of the following will form a buffer?