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Consider the following reactions and their associated equilibrium constants: A + 2B ~~~> C K1 C ~~~> D + E K2 For the reaction A + 2B ? D + E, having equilibrium constant Kc, A) Kc = K1 + K2 D) Kc = (K1)(K2) B) Kc = K1/K2 E) Kc = K2/K1 C) Kc = K1 - K2
dissolved in water to produce a 0.0125 M solution. The pH of the resulting solution is 6.39. Calculate the Ka for the acid.
what is the condensed structural formula for the product of the hydrogenation of 2-butene using a platinum catalyst
Which of the following are molecular solids and which are covalent solids. SO2, I2, P4, S8, H2O, SiO2
A 0.062 M aqueous sample of species y was analyzed by atomic absorption spectroscopy at 525 nm and in a 1.00-cm cell and yielded a %T value of 70.19 % . Calculate the molar absorptivity of species y.
A solution is prepared by dissolving 55.1 g of KCl in approximately 75 mL of water and then adding water to a final volume of 125 mL. What is the molarity of KCl(aq) in this solution?
A chemist wants to make 6.0L of a .350M CaCl_2 solution. What mass of CaCl_2 should the chemist use?
When 338 g of Bi2O3 reacts with excess carbon, how many moles of Bi2O3 react?
In the electrolysis of aqueous NaCl, how many liters of Cl2(g) (at STP) are generated by a current of 7.50 A for a period of 100. min.
"Alpha" iron metal crystallizes with the body-centered cubic unit cell. If the unit cell is 287 pm on each side, what is the density of alpha iron?
A syringe filled with air can be used to test the relationship between the temperature and the volume of a sample of gas. The syringe has a movable plunger that allows an enclosed sample of gas to be held at a constant external pressure, so the ga..
An average human DNA molecule has 5 X 10^8 binucleotides (rungs on the DNA ladder) of four different kinds. If each rung were a random choice of one of these four possibilities, what would the residual entropy associated with this typical DNA mole..
There are two stable isotopes of gallium. their masses are 68.9257 amu and 70.9249 amu. If the average atomic mass of gallium is 69.73 amu, what is the natural abundance of the lighter isotope
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