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John Schreifels @GMU: What is the change in mass of 95Mo when it is formed from protons, electrons and neutrons if the atom has a mass of 94.9058411 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: Calculate the [H3O+] of 119.11 mL of a buffer initially consisting of 0.1104 M C2H5NH2 and 0.1023 M C2H5NH3NO3 after addition of 0.0021 mol of HCl. Assume that no volume change occurs after addition of the acid. The Kb of C2H5NH2 is 5.60e-4

@X@user.full_name@X@ @GMU: How much time in hours would it take for a 1.0229 g sample of 239Pu to decay to a mass of 0.7010 g if it has a half-life of 7.568e11 s.

@X@user.full_name@X@ @GMU: What is the rate of consumption of A (M/s), if the rate of consumption of B is 0.287 M/s? Use the reaction below:3A + 2B + 4C → products

@X@user.full_name@X@ @GMU: What is the standard free energy change for the ionization of HCN acid, if its Ka is 4.90e-10.

John Schreifels @GMU: What is Kp for the reaction below, if Kc = 6.26e-5 at 50.9°C?3A(s) + 2B(g) → 4C(g)

@X@user.full_name@X@ @GMU: The vapor pressure of In (l) at 2179.3 K is 282.1 mm Hg. What is the heat of vaporization if its normal boiling point is 2353.2 K?

@X@user.full_name@X@ @GMU: What is the solubility in g/L of N2 at a partial pressure of 609.1 torr, if the solubility at a partial pressure of 503.5 torr is 0.01281 g/L?

@X@user.full_name@X@ @GMU: What is the activation energy (in kJ/mol) for the reaction below if the rate constants are 2.700e-4 M-1s-1 at 327.00°C and 7.20e-4 M-1s-1 at 345.23°C?H2(g) + I2(g) → 2HI(g)

@X@user.full_name@X@ @GMU: The reaction below is a exothermic reaction. What would one have to do to increase the size of the equilibrium constant?H2(g) + O2(g)→2H2O(g)