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A solution of KMnO4 containing 1.67 mg of manganese per 100 mL has a transmittance of 18.9% when measured with a 2.00 cm optical cell. A 1.00 g sample of a manganese steel is dissolved, oxidized to permanganate, and diluted to 500 mL. Using a 1.00 cm optical cell, the absorbance measured is 0.500. What is the % manganese in the steel?
Explanation of Ratios, In an unsymmetrical alkene, the boron atom adds predominantly to the least substituted carbon atom. For example, 2-methyl-2-butene gives the products shown below.
a mixture of nitrogen and hydrogen reacts as fully as possible to form a 56 l mixture of ammonia and hydrogen at stp. when this mixture is compressed to 10.0 atm and chilled to 200.0 K, all of the ammonia is liquefied leaving 3.2 L of hydrogen sti..
From 5g of benzopinacol you obtained benzopinacolona 75% crude. The yield after recrystallization was 2 grams. benzapinacol molecular weight = 366.46 g / mol benzopinacolone molecular weight = 348.44 g / mol determine:
A reaction mixture initially contains 2.8M H2O and 2.6 M SO2. Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 x 10^-6 ?
What maximum mass in kilograms of carbon dioxide is produced by the complete combustion of 10.0kg of this fuel mixture?
For the titration of 50.00 mL of 0.0200 M 2-(N-Morpholino)ethanesulfonic acid with 0.09900 M NaOH, calculate how much titrant (mL) is required to reach a pH of 9.29 mL in the receving flask.
Which process will likely increase the solubility of solid KCl in water? Stirring the mixture. Increasing the surface area of KCL * Raising the temperature of the mixture *lowering the temperature of the mixture
Suppose 35.68 mL of 0.01015 M KMnO4 is required to titrate 3.576 g of a sample containing C2O42-. What percentage Oxalate is present in the sample?
The boiling point of the solvent and of the solution and the weight of the solute and solvent. The freezing point of the solvent and of the solution and the weight of the solute and solvent.
What is the pH of a buffer that results when 0.50 mole of H3PO4 is mixed with 0.75 mole of NaOH and diluted with water to 1.00 L, The acid dissociation constants of phosphoric acid are Ka1 = 7.5 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 3.6 x 10-13
Stack the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
determine the molarity of a solution prepared by dissolving 45.0g of CH3OH in sufficient water to make 725mL.
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