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@X@user.full_name@X@ @GMU: Using the Boltzmanns formula calculate the entropy of 1.44e11 molecules of a compound if they are randomly distributed in one of 2 ways.

@X@user.full_name@X@ @GMU: ACS-What is the free energy change for the reaction below? 2MnO2(s) + 8OH-(aq) + 3Cu2+(aq) → 2MnO4-(aq) +4H2O(l) + 3Cu(s) E° = -0.250V

@X@user.full_name@X@ @GMU: The initial concentration of PCl5 was 0.1937 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of PCl3?PCl5(g) → PCl3(g) + Cl2(g) Kc = 0.0580

@X@user.full_name@X@ @GMU: The initial concentration of COCl2 was 0.1136 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of CO?COCl2(g) → CO(g) + Cl2(g) Kc = 8.13e-4

@X@user.full_name@X@ @GMU: What is Kp for the reaction below, if Kc = 8.19e-6 at 190.7°C?3A(s) + 5B(g) → 3C(g)

@X@user.full_name@X@ @GMU: What is the wavelength of a line in the Balmer series of the hydrogen spectrum, if the transition occurs from ni = 4 to nf = 2? Remember the Rydberg constant is 1.097×10-2 nm-1

@X@user.full_name@X@ @GMU: What is the de Broglie wavelength of a bumble bee with a mass of 1.667 g traveling at a speed of 1.917 m/s?

@X@user.full_name@X@ @GMU: Which is the correct electron configuration for B in its ground state?

@X@user.full_name@X@ @GMU: Which is the correct electron configuration for Li in its ground state?

John Schreifels @GMU: How many sigma bonds (first) and how many pi bonds (second) are there in the compound drawn below? In this model there is a carbon where two lines intersect.