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Sodium oxalate, Na2C2O4, in solution is oxidized to CO2 by MnO4- which is reduced to Mn2+. A 50.1 volume of a solution of MnO4- is required to titrate a 0.339 g sample of sodium oxalate. This solution of MnO4- is then used to analyze uranium-containing samples. A 4.62 g sample of an unknown uranium-containing material requires 32.5 mL of the solution for titration. The oxidation of the uranium can be represented by the change UO2+->UO(subscript)2 2+
Calculate the percentage uranium in the sample.
Calculate the partial pressure of carbon dioxide after cooling back down to the initial temperature and the mass percent, the mole fraction, and .
reacting ammonia with carbon dioxide. the by product is water. 637.2g of ammonia are reacted with 787.3g of carbon dioxide. which of the two reactant is a limiting reactant?
For many reactions near room temperature, the rate and the rate constant approximately double for a 10 °C rise in temperature. What is the value of activation energy in kJ/mol for such a reaction?
sample of anhydrous salt sodium sulfate Na2SO4 is allowed to absord water to form the decahydrate salt.
what is the structure of a compound of molecular formula c10h14o2 that shows a strong IR absorbtion at 3150-2850cm^-1 and gives the following HNMR absorptions
Establish the equilibrium K values for a distillation system to separate diisopropyl benzene from a mixture of heavy aromatics, the major component in the heavy aromatics is diphenyl propane. Other non key components are triisopropyl benzene, cume..
silica gel columns having smaller particle size procedure more effective chromatographic separations
60.0 mL of a 0.450 M solution is titrated with 0.570 M . Calculate the volume of required to reach the equivalence point.
You have 75.0 g of solute Q dissolved in 300-mL of water. The distribution coefficient between ether and water for solute Q is 8. a) How many extractions using 60-mL of ether each would you need to carry out to extract a total of 70.7 g (total) so..
Olive oil is comprised of 80% oleic acid, CH3(CH2)7CH=CH(CH2)7COOH. How many molecules of acetyl CoA are produced by catabolism of oleic acid
Vitamin b6 is needed in the metabolism of amino acids. When it binds to an enzyme it forms a complex with the e-amino group of lysine, which is a primary amine.
The three pKa values for phosphoric acid are 2.3, 7.2, and 12.1. Calculate the amount of each salt that you will need to prepare the buffer.
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