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@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

@X@user.full_name@X@ @GMU: What is the solubility in g/L of NO at a partial pressure of 360.2 torr, if the solubility at a partial pressure of 456.7 torr is 0.03426 g/L?

@X@user.full_name@X@ @GMU: The osmotic pressure of a 17.490 mM solution of Na3PO4 is 951.569 mm Hg at 20.71 °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 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?

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 (C7H12(g)) = 407.0900 J/mol*K and the heat of formation of C7H12(g)) is 103.0600 kJ/mol.7C(gr) + 6H2(g) → C7H12(g)