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@X@user.full_name@X@ @GMU: What is the value of Kc at 726.85 °C for the reaction below if Kp is 4.20e-3 at this temperature?CH4(g) + 2H2S(g) → CS2(g) + 4H2(g)

@X@user.full_name@X@ @GMU: The osmotic pressure of an unknown solution is 0.845 atm at 26.97 °C. Which of the solutions below is the most likely one? Assume any salt is completely ionic!

The acid-catalyzed hydrolysis of sucrose occurs by the following overall reaction, for which the graph is shown below. Determine the half-life and the rate constant.C12H22O11(s) + H2O(l) → 2 C6H12O6(aq)

@X@user.full_name@X@ @GMU: What is the boiling point when 14.14 g of KOH (formula mass = 56.11 g/mol) is dissolved in 159.38 g H2O? The boiling point elevation constant is 0.5100 (°C*kg)/mol. Assume any salt is completely ionic!

@X@user.full_name@X@ @GMU: What is the boiling point when 10.69 g of urea (formula mass = 60.00 g/mol) is dissolved in 186.03 g ethyl alcohol? The normal boiling point and boiling point elevation constant are 78.50 °C and 1.220 (°C*kg)/mol, respectively.

What would be the expected rate law for the mechanism described below?1 NO + 1/2O2 → NO2 fast 2 NO2 + SO2 → NO + SO3 slow

@X@user.full_name@X@ @GMU: Initially there were equilibrium concentrations of 0.1859 M A, 0.3333 M B, and 0.1859 M C (see reaction below). The concentration of C was suddenly increased to 11.73 M. What was the approximate concentration of each after equilibrium had been re-established?5A → 3 B +3 C Kc = 1.073

@X@user.full_name@X@ @GMU: It has been suggested that carbonyl chloride forms by the mechanism below. What is the molecularity of the rate limiting step? (1) Cl2(g) → 2 Cl(g) Fast, equilibrium (2) Cl(g) + CO(g) → COCl(g) Fast, equilibrium (3) COCl(g) + Cl2(g) → COCl2(g) +Cl(g) Slow

@X@user.full_name@X@ @GMU: A mixture containing an initial concentration of 0.1930 M for H2 and 0.1430 M for I2 is allowed to come to equilibrium (see reaction below). What must be the equilibrium concentration of HI?H2(g) + I2(g) → 2HI(g) Kc = 48.7000

@X@user.full_name@X@ @GMU: The following data was obtained by the method of initial rates. What is the rate law for the reaction of A with B to produce product? [A]o [B]o Rate, M/s 0.273 0.347 7.28e-4 0.481 0.347 7.28e-4 0.273 0.612 1.70e-3