@X@user.full_name@X@ @GMU: Calculate the [H3O+] of 108.32 mL…

@X@user.full_name@X@ @GMU: Calculate the of 108.32 mL of a buffer initially consisting of 0.1881 M CH3(CH2)2CH2NH2 and 0.0979 M CH3(CH2)2CH2NH3Cl after addition of 0.0028 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: NO2 at 383°C decomposes to form N…

@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 3.46e1 s when the initial concentration of NO2 was 6.03e-3 M. What is the rate constant for this reaction?2NO2(g) → 2NO(g) + O2(g)

John Schreifels @GMU: What is the change in mass of 82Kr whe…

John Schreifels @GMU: What is the change in mass of 82Kr when it is formed from protons, electrons and neutrons if the atom has a mass of  81.913482 amu? The masses of the proton, electron and neutron are 1.00728 amu, 0.000549 amu and 1.00867 amu, respectively.