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@X@user.full_name@X@ @GMU: Calculate the pH of 116.02 mL of a buffer initially consisting of 0.1074 M (CH3)3N and 0.1420 M (CH3)3NHNO3 after addition of 0.0016 mol of HCl. Assume that no volume change occurs after addition of the acid. The Kb of (CH3)3N is 6.30e-5

@X@user.full_name@X@ @GMU: Determine the molality of a 7.239 wt % aqueous solution of LiBr.

@X@user.full_name@X@ @GMU: The cell potential was -0.248 V at 25oC and a Sn4+(aq) concentration of 0.149 M. What was the hydronium ion concentration? The H2(g) pressure was 1 atm at 25oC.2H+(aq) + Sn2+(aq) → Sn4+(aq) + H2(g) Ecoell = -0.150 V

@X@user.full_name@X@ @GMU: What is the rate of consumption of B (M/s), if the rate of consumption of C is 0.330 M/s? Use the reaction below:2A + 5B + 3C → products

@X@user.full_name@X@ @GMU: What is the fraction of A remaining after 62.466 minutes if the first order rate constant is 2.149e-4 s-1?

@X@user.full_name@X@ @GMU: What is the solubility in g/L of CO at a partial pressure of 288.7 torr, if the solubility at a partial pressure of 426.9 torr is 0.01636 g/L?

@X@user.full_name@X@ @GMU: The cell potential was 0.160 V at 25oC and a Ni2+(aq) concentration of 0.197 M. What was the pH of the solution? The H2(g) pressure was 1 atm at 25oC.2H+(aq) + Ni(s) → Ni2+(aq) + H2(g) Ecoell = 0.2600 V

@X@user.full_name@X@ @GMU: What is the solubility in g/L of CH3Br at a partial pressure of 457.9 torr, if the solubility at a partial pressure of 363.1 torr is 7.211 g/L?

@X@user.full_name@X@ @GMU: What is the standard free energy change for the ionization of hydrazine, if its Kb is 8.90e-7.

@X@user.full_name@X@ @GMU: What is the concentration of OH- in 0.1113 M HNO2 ? See reaction belowHNO2 + H2O → NO-2 + H3O+ Ka = 4.600×10-4