@X@user.full_name@X@  @GMU: When 10.59 g of citric acid was dissolved in 107.4 g of benzene, the freezing point was 276.0 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.

John Schreifels @GMU: What is the balanced reaction at the anode for the following galvanic cell?Sn(s) | Sn2+(aq) || Cu+(aq) | Cu(s)

@X@user.full_name@X@ @GMU: How much time in days would it take for a 1.4017 g sample of 233Pa to decay to a mass of 0.9045 g if it has a half-life of 5.417e6 s.

@X@user.full_name@X@ @GMU: What is the standard free energy change for the following cell?2Cu+(aq) + Ni(s) → 2Cu(s) + Ni2+(aq) Ecoell = 0.780V

@X@user.full_name@X@ @GMU: What is the rate of consumption of C (M/s), if the rate of consumption of A is 0.231 M/s? Use the reaction below:2A + 3B + 4C → products

@X@user.full_name@X@ @GMU: NO2 at 383°C decomposes to form NO and O2 according to second order kinetics (see reaction below). The half-life for this reaction was measured to be 9.12e1 s when the initial concentration of NO2 was 2.28e-3 M. What is the rate constant for this reaction?2NO2(g) → 2NO(g) + O2(g)

@X@user.full_name@X@ @GMU: What is the standard free energy change for the following cell?3Ag+(aq) + Al(s) → 3Ag(s) + Al3+(aq) Ecoell = 2.459V

@X@user.full_name@X@ @GMU: What would the [OH-] be after addition of 11.35 mL of 0.1000 M NaOH to 25.00 mL of 0.1000 HA (a weak acid, Ka = 1.06e-5)?

@X@user.full_name@X@ @GMU: Which pair of substances are bases in the reaction below?H2PO-4 + HNO2 → H3PO4 + NO-2

@X@user.full_name@X@ @GMU: What is the solubility in g/L of H2S at a partial pressure of 500.9 torr, if the solubility at a partial pressure of 364.0 torr is 1.616 g/L?