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What are the signs of ?Hvap and ?Svap for water? Do you expect the signs of these quantities to be the same for other liquids? Explain.
The addition of solid NaSO4 to an aqueous solution in equilibrium with solid BaSO4 will cause what? Ksp at 20 degrees C of BaSO4(s) = 1.5 x10^-9
a. what are the energies of the n=1-7 levels? b. what is the energy difference between n=6 and n=7? c. what does this very approximate calculation compare with experimental values
Estimate the magnitude of the absoulte error and percent error in the measured sample volumes. Compare those errors to the errors that occur when measuring volumes of approximately 8mL
one more question KOH(aq) + H3PO4(aq) For the equation given above, enter the total ionic equation and net ionic equation. only get 3 shots and already used two of them. something is missing.
Show all the steps for determining the overall net ionic equation by the method of half reactions for the redox reaction of permanganate with oxalic acid. the two unbalanced half reactions are MnO4 ---> Mn2+ (COOH)2 -----> CO2
Write down the dissociation reaction. (2) Estimate pH of a solution containing 0.6 g of acetic acid in 1 L of water. Molecular weight of acetic acid is 60 g/mol.
How would the absorbance of a NaSCN have been affected if .30 M Fe(NO3)3 had been used in place of .20 M. (In the case that the reaction has been completely driven to FeSCN2+
A certain substance has a heat of vaporization of 64.56 kJ/mol. At what Kelvin temperature will the vapor pressure
dissolved in water to produce 25.0 mL of a solution with pH = 3.28. Determine the ionization constant of the acid.
a saturated solution of which of the following substances in water would be the bestnbspconductor of electricity?1.
For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 2Na(s)+Br2(g)->2NaBr(s) 1. 2mol Na, 2mol Br2 Express your answer as a chemical formula.
Predict the freezing point of a solution of 10.0 g of carbon tetrachloride, CCl4, in 100.0 g of benezene, C6H6. For benezene
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