@X@user.full_name@X@ @GMU: Which product in the reaction below is a base (this one first in the answer) and which reactant is an acid?HS- + HSO-4 → H2S + SO24-

@X@user.full_name@X@ @GMU: Calculate the of 119.61 mL of a buffer initially consisting of 0.1875 M CH3(CH2)2CH2NH2 and 0.1069 M CH3(CH2)2CH2NH3Br after addition of 0.00344 mol of HCl. Assume that no volume change occurs after addition of the acid. The Kb of CH3(CH2)2CH2NH2 is 4.10e-4

@X@user.full_name@X@ @GMU: How much energy in kJ is released to form one mole of 116Cd from protons, electrons, and neutrons if the nucleus has a mass of 115.904755 amu? The masses of the proton, electron and neutron are 1.00728 amu, 0.000549 amu and 1.00867 amu, respectively.

@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 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: Determine the molality of a 8.983 wt % aqueous solution of NaF.

@X@user.full_name@X@ @GMU: To what temperature would you have to heat Zn(l) to cause its vapor pressure to become 284.7 mm Hg if its heat of vaporization and boiling point are 131.00 kJ/mol and 1180.2 K, respectively?

@X@user.full_name@X@ @GMU: The pH of a solution of HClO3 was 3.254. What was the hydronium ion concentration?

@X@user.full_name@X@   @GMU: When 0.4026 g of citric acid was dissolved in 109.3 mL of water, the osmotic pressure at 20.52°C was 0.4621 atm. What is the formula mass of this compound?

@X@user.full_name@X@ @GMU: Which pair of substances are bases in the reaction below?ClO-4 + HClO → HClO4 + ClO-