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John Schreifels @GMU: To what temperature would the reaction below need to be heated to have a rate constant of 2.25 M-1s-1 if the rate constant was 1.300 M-1s-1 at 427.00°C and the activation energy was 134.00 kJ/mol?NO2(g) + CO(g) → NO(g) + CO2(g)

@X@user.full_name@X@ @GMU: By how much would the rate of reaction (see below) change if the concentration of H+ increased by a factor of 2.394. The rate law of this reaction is Rate = k[BrO3-][Br-][H+]2.BrO3- + 5Br- + 6H+ → 3Br2 + 3H2O

@X@user.full_name@X@ @GMU: What is the correct expression for the solubility product of silver carbonate?Ag2CO3(s) → 2Ag+(aq) + CO32-(aq)

@X@user.full_name@X@ @GMU: Which pair of substances are acids in the reaction below?BrO- + HClO4 → ClO-4 + HBrO

@X@user.full_name@X@ @GMU: What is the fraction of A remaining after 52.798 minutes if the first order rate constant is 3.680e-4 s-1?

@X@user.full_name@X@ @GMU: What is the free energy change for the reaction below, if the reaction quotient, Q, at 25.0oC is equal to 1.67e-8?4C2H2(g) + 5 H2(g) → C8H18(g) ΔGo = -819.870 kJ.

@X@user.full_name@X@ @GMU: What is the rate of consumption of A (M/s), if the rate of consumption of B is 0.381 M/s? Use the reaction below:3A + 4B + 5C → products

@X@user.full_name@X@ @GMU: Initially there were equilibrium concentrations of 0.3421 M A, 0.2341 M B, and 0.1120 M C. Which change will cause the equilibrium to shift from right to left if the reaction is exothermic? Use the reaction below.4A(aq) → 4 B(aq) +3 C(aq) K = 1.003

@X@user.full_name@X@ @GMU: What is the rate of consumption of A (M/s), if the rate of consumption of B is 0.345 M/s? Use the reaction below:3A + 4B + 5C → products

@X@user.full_name@X@ @GMU: Uranium -238 decays in a series of steps to Pb-206. When the material is very old, one can treat the kinetics as a decay directly to Pb and the ratio of these two can be treated as a measure of the age of a rock. A rock containing 238U and 206Pb was examined to determine its approximate age. The molar ratio of 206Pb to 238U was 0.1246. Assuming no lead was originally present and that all lead formed remained in the rock, what is the age of the rock (in years)? The half-life of 238U is 4.50e9 yr.