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?

Which atom(s) in the acetic acid (CH3COOH, shown below) is/are sp3 hybridized as identified with the bolded/larger atom(s)?  

Which microscopic representation best represents a homogeneous mixture?

For the oxidation of iron to form iron(III) oxide: 4Fe(s) + 3O2(g) → 2Fe2O3(s) ΔSo = –549.73 J/K at 298 K The enthalpy of formation of Fe2O3(s) is –824.2 kJ/mol. What is the standard change in Gibbs free energy for this reaction at 298 K?  

For the reaction of: CH3NC(g) ⇌ CH3CN(g)   Kc = 11 What is the equilibrium concentration of CH3CN if the flask initially contains only 0.56 M CH3CN?

Which numerical process will determine the mass (in grams) of carbon in 1.312 mol of acetaminophen (C8H9NO2)?  The molar mass of acetaminophen is 151.18 g/mol.

In the compound (NH4)2S2O3, which element is present in the smallest percent by mass?

Give the correct name for FePO4.

Of the substances below, which will hydrogen bond with water?