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The change in enthalpy Delta H for a reaction is -39.6 kJ/mol. The equilibrium constant for the reaction is 4.4×103 at 298 K.What is the equilibrium constant for the reaction at 635 K?
At a particular temperature, Kp = 0.25 atm for the reaction N2O4(g) 2NO2(g) a. A flask containing only N2O4 at an initial pressure of 4.5 atm
The average molecular weight of the protein by gel permeation is 525000 g mass/g mol. Calculate the mole fraction of each component in solution.
How much heat in Kilojoules must be removed from a glass of water that contains 100G if water to lower its temperature from 30C to 15C.
When a metal was exposed to light at a frequency of 4.54× 10^15 s-1, electrons were emitted with a kinetic energy of 3.10 × 10^-19 J.
Calculate the binding energy of the 2s electron in iron and calculate the binding energy of the 2s electron in iron. Does the new energy agree better with experiment?
The solubility product constant for Ce(IO3)3 is 3.2 *10 ^-10, What is the Ce3+ concentration in a solution prepared by mixing 50.0 mL of 0.250 M Ce 3+ with 50.0 mL of 0.040 M IO3^-?
How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0131 M?
What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction.
A solution is made by dissolving 0.040 moles of the weak acid HA in water to make 1.00 L of a solution whose pH is 4.90. Calculate the Ka for the acid.
As per the Haber Process(N2(g)+ 3 H2(g)= 2 NH3(g) ) ,what mass of nitrogen should you see in the reaction If you must produce 700g of ammonia? Percent yield of this reaction = 70%
What is the molecular weight of a gas if a 250 mL sample of this gas collected over water at 735 mm Hg and 28.0°C has a mass of 1.25 gram? The equilibrium vapor pressure of water at 28.0°C is 28.3 mm Hg.
if 7.o moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end.
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