@X@user.full_name@X@ @GMU: What is the conjugate base and base dissociation constant of HBrO if its acid dissociation constant is 2.000×10-9 ?

@X@user.full_name@X@ @GMU: What is the equilibrium concentration of H3O+ in 0.1321 M H2S? See reaction belowH2S + H2O → HS- + H3O+ Ka = 9.100×10-8

@X@user.full_name@X@ @GMU: What is the solubility in g/L of CO at a partial pressure of 580.7 torr, if the solubility at a partial pressure of 417.8 torr is 0.01601 g/L?

@X@user.full_name@X@ @GMU: What is the temperature at which the reaction below becomes spontaneous, if the standard entropies of reactants and products at 25oC are So (C(gr)) = 5.74 J/mol*K, So(H2(g)) = 130.68 J/mol*K, and So (C5H8(g)) = 331.1100J/mol*K and the heat of formation of C5H8(g)) is 144.4200 kJ/mol?5C(gr) + 4H2(g) → C5H8(g)

@X@user.full_name@X@ @GMU: Which base listed below would be the best to creat a buffer having a pH of 4.9606?

John Schreifels @GMU: When 8.078 g of citric acid was dissolved in 104.5 g of benzene, the freezing point was 276.6 K. What is the formula mass of this compound? The freezing point depression constant for benzene is 5.12 (°C*kg)/mol. The melting point and boiling points are 5.50°C and 80.10°C, respectively.

@X@user.full_name@X@ @GMU: Which of the crystalline substances below is an example of a metallic solid?

@X@user.full_name@X@ @GMU: The cell potential was -0.601 V at 25oC and a Cu2+(aq) concentration of 0.139 M. What was the hydronium ion concentration? The H2(g) pressure was 1 atm at 25oC.2H+(aq) + Cu(s) → Cu2+(aq) + H2(g) Ecoell = -0.340 V

John Schreifels @GMU: What is the total entropy change at 25oC for the reaction below, if the standard entropies of reactants and products are So (C(gr)) = 5.74 J/mol*K, So (H2(g)) = 130.68 J/mol*K, and So (C8H8(g)) = 345.2600 J/mol*K and the heat of formation of C8H8(g)) is 147.8500 kJ/mol.8C(gr) + 4H2(g) → C8H8(g)

@X@user.full_name@X@ @GMU: What is Kp for the reaction below, if Kc = 1.52e-5 at 373.5°C?2A(s) + 3B(g) → 4C(g)