If a 1.0 L flask is filled with 0.22 mol of N2 and 0.22 mol of O2 at 2000°C, what is [NO] after the reaction establishes equilibrium? Kc = 0.10 at 2000°C N2(g) + O2(g) ⇌ 2NO(g)

Consider the reaction potential energy diagram. What describes the uncatalyzed reverse reaction pathway?

For the galvanic cell: Zn(s) + 2Tl+(aq) → 2Tl(s) + Zn2+(aq)   Eocell = 0.42 V If the standard reduction potential for: Zn2+(aq) + 2e– → Zn(s)   Eored = –0.76 V What is the standard reduction potential for: Tl+(aq) + e– → Tl(s)   Eored = ? V

A weak species is titrated with a strong acid or base. Was the species a weak acid or a weak base and what is the corresponding pKa or pKb?

Which molecule has 4 sigma (σ) bonds?

When the reaction: A + 2B → C was studied, the experimental data was obtained and plotted. Based on these graphs, what is the experimental rate law?  

How much heat is evolved or absorbed when 25.0 g of silver oxidizes to form silver oxide (Ag2O) under standard conditions? The enthalpy of formation (ΔHfo) of Ag2O is –31.05 kJ/mol and the molar mass of silver is 107.87 g/mol.

Which substance would have the smallest standard molar entropy?

For the reaction of hydrogen: H2(g) ⇌ 2H(g)    Kc = 1.1 Which reaction mixture(s) would proceed towards the products to reestablish equilibrium?  

What are two definitions of a base in an aqueous solution?