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1.0 mL of a 3.60 x 10^-4 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming solution A. Then 2.00 mL of solution A is diluted with 8.00 mL of petroleum ether, forming solution B. How many grams of oleic acid are 5.00 mL of solution B?
How many grams of HCl are produced according to the following equation, H2 + Cl2 = 2 HCl, when 4.0 g of hydrogen reacts completely.
Calculate the wavelength of the n=4 to n=1 and the n=4 to n=3 transitions. Indicate in which regions of the electromagnetic spectrum these transitions would occur.
The following isotopic cluster was observed in a mass-spectrum of a parent peak of a halogenated compound:
Why is sodium bicarbonate used instread of sodium hydroxide for the initial extraction
Suppose that 1.41 g of impure barium hydroxide is dissolved in enough water to produce 177.1 mL of solution and that 44.1 mL of this solution is titrated to the stoichiometric point
In a certain process, 750. J of work is done on a system which gives off 195 J of heat. Calculate the total energy change (?U) for this process
a 4.50 gram sample of LiCl at 25.0 dissolves in 25.o ml of water also at 25.0 Celsius. the final equilibrium temperature of the resulting solution is 60.8 Celsius. what is the enthalpy of solution, delta Hs of LiCl expressed in kilojoules per mole..
Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium hydroxide
Calculate the pH of a 3.92×10^-3 M solution of H2SO4. (Ka = 0.0120 for HSO4-) 3-In a 4.66×10^-2 M solution, a monoprotic acid, is 20.4% dissociated. Calculate Ka for this acid
Select the IR frequency and number of NMR signals that is diagnostic for either isomer a or isomer b. Isomer A: cyclopentanecarboxamide Isomer B: 6-hydroxyhexanenitrile
Under what conditions will the endothermic reaction, 2 Na2O(s) 4 Na(s) + O2(g), be spontaneous?
Determine the amount of energy involved in calories given off when 85 grams of H2O cools from 45 degrees Celsius to 25 degrees Celsius?
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