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@X@user.full_name@X@ @GMU: The osmotic pressure of a 17.028 mM solution of Na3PO4 is 873.835 mm Hg at 18.93 °C. How many ions per formula unit of Na3PO4 must there be? The compound may not be completely ionic.

@X@user.full_name@X@ @GMU: What is the activation energy (in kJ/mol) for the reaction below if the rate constants are 3.700e-5 s-1 at 25.00°C and 6.62e-4 s-1 at 47.01°C?2N2O5(g)→ 4NO2(g) + O2(g)

@X@user.full_name@X@ @GMU: What is the coefficient, b, in the reaction below, if Kc = 1.49e-6 and Kp = 2.50e-8 at 453.89°C?4A(s) + bB(g) → 3C(g)

@X@user.full_name@X@ @GMU: By how much would the rate of reaction (see below) change if the concentration of CH3CHO increased by a factor of 1.542. The rate law of this reaction is Rate = k[CH3CHO]3/2.CH3CHO(g) → CH4(g) + CO(g)

John Schreifels @GMU: What is the balanced reaction at the anode for the following galvanic cell?Fe(s) | Fe3+(aq) || Cd2+(aq) | Cd(s)

@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 (C8H14(g)) = 446.3500J/mol*K and the heat of formation of C8H14(g)) is 82.4600 kJ/mol?C8H14(g) → 8C(gr) + 7H2(g)

@X@user.full_name@X@ @GMU: What is the balanced reaction at the anode for the following galvanic cell?Cd(s) | Cd2+(aq) || Cu2+(aq) | Cu(s)

@X@user.full_name@X@ @GMU: The osmotic pressure of an unknown solution is 1.424 atm at 30.85 °C. Which of the solutions below is the most likely one? Assume any salt is completely ionic!

@X@user.full_name@X@ @GMU: What is the value of Ksp in water, if 2.90e-8 M of A3B3 dissolves according to the reaction below?A3B3(s)→3A(aq) + 3B(aq) where A and B are ions

@X@user.full_name@X@ @GMU: What is the coefficient, b, in the reaction below, if Kc = 2.23e-3 and Kp = 0.0836 at 183.72°C?3A(s) + bB(g) → 4C(g)