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Consider a saturated aqueous solution of barium oxalate Ba(C2O4) while the solution is buffered at pH 3.0. The solubility product, Ksp for Ba(C2O4) is 1.0 x 10-6, the acid dissociation constants, Ka1 and Ka2, for oxalic acid, H2C2O4 are 5.6 x 10-2 and 5.4 x 10-5, respectively as well as the autoprotolysis constant for H2O, Kw is 1.0 x 10-14.
tetrafluoroethylene c2f4 can be converted to octafluorocyclobutane which can be used as a refrigerant or an aerosol
The crystal lattice enegery for LiBr(s) is -818.6 kJ/mol at 25 degrees Celcius. The hydration energy of the ions of LiBr is -867.4 kJ/mole at 25 degrees Celcious (for infinite dilution).
The first atomic explosion was detonated in the desert north of Alamogordo, New Mexico, on July 16, 1945. What fraction of the strontium-90 (t1/2 = 28.8 yr) originally produced by that explosion still remained as of July 16, 1993?
calculate the mass of calcium carbonate formed when 25 ml of a solution of calcium chloride at 0.10 m react with sodium
What is the molar concentration of the manganese cation in the solution formed when excess solid MnS is added to water after equilibrium has been established
What mass of magnesium chloride is needed to react with 145 g of silber nitrate accourding to the following reaction: MgCl2(aq)+2AgNO3(aq) -> Mg(NO3)2(aq) + 2AgCl
Explain what volume of 0.200 M HCl should be added to 500.0mL of 0.250 M NH3 to have a buffer with a pH of 9.00
Which of the following is a statement of Hess's Law? Answer a. If a reaction is carried out in a series of steps, the ΔH for the reaction will equal the sum of the enthalpy changes for the individual steps
A gas expands from 360. mL to 971 mL at constant temperature. Calculate the work done (in joules) by the gas if it expands against a vacuum.
What is the balanced equation for the saponification of glyceryl trioloeate and sodium hydroxide
Calculate the heat of the reaction for the sample (kJ). Calculate the heat of the above reaction in J/mol of HCl.
A 25.0 mL aliquot of an FeSO4 solution is titrated against standard 0.0100M K2Cr2O7 solution using diphenylmethane indicator. At the end point 23.oo mL of K2Cr2O7 solution have been consumed. Calculate the normality and the molarity of of the FeSO..
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