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@X@user.full_name@X@ @GMU: Initially there were equilibrium concentrations of 0.3344 M A, 0.2118 M B, and 0.1961 M C. Which change will cause the equilibrium to shift from left to right if the reaction is endothermic? Use the reaction below.5A(aq) → 3 B(aq) +3 C(aq) K = 0.424

@X@user.full_name@X@ @GMU: Radioactive substances decay by first-order kinetics. How many days would be required for a sample containing phosphorus-32 to decrease to 59.86% of its initial activity? The half-life of phosphorus-32 is 1.42e1 days.

@X@user.full_name@X@ @GMU: What is the rate constant at -58.56°C for the reaction below if the rate constant is 1.08e9 M-1s-1 at -78.00°C and the activation energy is 11.90 kJ/mol?NO(g) + O3(g) → NO2(g) + O2(g)

@X@user.full_name@X@ @GMU: A mixture containing an initial concentration of 0.1587 M for H2 and 0.1421 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: Initially there were equilibrium concentrations of 0.1611 M A, 0.5000 M B, and 0.1611 M C. Which change will cause Qc to be greater than Kc? Use the reaction below.5A → 2 B +3 C Kc = 0.644

@X@user.full_name@X@ @GMU: Determine the rate of consumption of H2 if the rate for formation of NH3 is 0.258 M/s. Use the reaction below.N2(g) + 3 H2(g) → 2NH3(g)

@X@user.full_name@X@ @GMU: Which equation describes the rate of a bimolecular reaction?

@X@user.full_name@X@ @GMU: A mixture containing an initial concentration of 0.1306 M for N2 and 0.1140 M for O2 is allowed to come to equilibrium (see reaction below). What must be the equilibrium concentration of NO?N2(g) + O2(g) → 2NO(g) Kc = 2.70e-18

@X@user.full_name@X@ @GMU: The osmotic pressure of a 14.553 mM solution of (NH4)3PO4 is 732.624 mm Hg at 32.02 °C. How many ions per formula unit of (NH4)3PO4 must there be? The compound may not be completely ionic.

@X@user.full_name@X@ @GMU: What is the mole fraction of potassium chloride, KCl, in an aqueous solution that contains 1.8434 g of potassium chloride dissolved in 24.5581 grams of water? MW(KCl) = 74.551 g/mol.