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125 mL of .45M of oxalic acid is added to 200 mL of 0.55 M of potassium permanganate acidified with a few drops of concentrated sulfuric acid. Determine the mass of the gaseous compound produced in the reaction.
Which will experience the greater effective nuclear charge, the electrons in the n=3 shell in Ar or the n=3 shell in Kr. Which will be closer to the nucleus. Explain.
A radioactive sample was analyzed seven times for the isotope ratio with a mean of 1.52793 and a standard deviation of 0.00007. Find the 99% confidence interval for the sample.
The ionization constant of lactic acid CH3CHOHCO2H is 1.36x10^-4. If 20.0 g of lactic acid is used to make a solution with a volume of 1.00 L, what is the concentration of the hydrogen ion in this solution
What is the number average degree of polymerization at the theoretical gel point which is predicted by the theory? (10 points) Hint: Use the regular definition of the number average degree of polymerization, ; x n (x n )t = Total # of structural u..
what is the percent by mass of nahco3 in a solution containing 30 g of nahco3 dissolved in 500 ml of
The rate constant for the production of glucose from cellulose with a newly developed catalyst was found to vary with temperature as shown by the data in teh following table. What is the activation energy for this reaction
Calculate the freezing point depression constant (Kf) of phenol ? c)If 24.5899g of unknown was added to 838.72g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
a solution is made by dissolving 31.0 g of naoh in approximately 450 ml of water in a volumetric flask. the solution
Ethanol v dimethylether, What are the molecular weights of ether and dimethylether? Are they isomers of each other or is each an isomer of something else?
What is the Ksp for cholesterol in the human body (blood serum). Also, what is cholesterol's solubility in the blood serum.
Explain why the salt of a weak acid, as well as the acid itself, must be present to form a bu?er solution.
The elements in Group 6A(16) are sometimes called the chalcogens. The symbol and atomic number of the only metallic chalcogen are (a) and (b)
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