@X@user.full_name@X@ @GMU: What is the activation energy (in kJ/mol) for the reaction below if the rate constants are 1.800e-4 s-1 at 477.00°C and 4.60e-4 s-1 at 493.63°C?Cyclopropane → Propene

@X@user.full_name@X@ @GMU: A mixture containing an initial concentration of 0.1074 M for H2 and 0.0808 M for Cl2 is allowed to come to equilibrium (see reaction below). What must be the equilibrium concentration of HCl?H2(g) + Cl2(g) → 2HCl(g) Kc = 5.00e16

@X@user.full_name@X@ @GMU: How many grams of potassium chloride, KCl, would be required to prepare a 0.1175 m KCl solution by combining this compound with 0.4495 L of water (assume a density of 1.00 g/mL)? The molecular weight is 74.551 g/mol.

@X@user.full_name@X@ @GMU: Initially there were equilibrium concentrations of 0.1474 M A, 0.3333 M B, and 0.1474 M C. Which change will cause the equilibrium to shift from right to left? Use the reaction below.4A → 3 B +3 C Kc = 0.504

@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? o o Rate, M/s 0.279 0.226 5.67e-6 0.556 0.226 4.01e-6 0.279 0.346 1.33e-5

Determine if the forward reaction for the energy level diagram is endothermic or exothermic and what the activation energy for the forward reaction is.

@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.

@X@user.full_name@X@ @GMU: The osmotic pressure of an unknown solution is 0.398 atm at 11.35 °C. Which of the solutions below is the most likely one? Assume any salt is completely ionic!

Which of the following conditions will cause equilibrium to shift to the left?2NH3(g) + ⇋ N2(g) + 3H2(g)

John Schreifels @GMU: Determine the mass of NaF required to produce a 0.2088 molal solution by dissolving NaF in 227.3614 g of H2O. MW(NaF) = 41.9882 g/mol.