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a. What is the pH of rainwater (containing no buffering other than from water itself) if the current concentration of carbon dioxide in the atmosphere is 390 ppm. Show calculations.
b. What is the concentration of carbonate ion in this system?
For a particular redox reaction NO(2)^- is oxidized to NO(3)^- and Ag^+ is reduced to Ag. Complete and balance the equation for this reaction in a basic solution
A solution of NH4Cl is prepared and its molarity is 1.00 x 10-3; what is the pH of this solution. Show all work.
Determined atomic weight for the hypothetical element
What is the pH when 100 mL of 0.1 M HCl is titrated with 50 mL of 0.2 M NaOH?
what is the internal energy change of a gas gives off 312 of heat while being compress 862ml by a pressure of 1.64 bar?
A solution of ammonia and water contains 3.40×1025 water molecules and 7.20×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
Assume that the pH is low enough that CH3COOH is not dissociated at all and that the activity of water equals 1 just like for pure liquid water (after all, the solution is quite dilute). HINT: This problem requies you to keep and extra large numbe..
The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g) + O2 (g) ? 2NO2 (g) What is the value of Keq at this temperature for the following reaction? 4NO (g) + 2O2 (g) ? 4NO2 (g)
A solid sample containing some Fe^2+ ion weighs 1.062 g. It requires 24.12 mL 0.01562 m KNno4 to titrate Fe^2+ in the dissolved sample to a pink end point
What if you did the extraction 3 times 3. What if you just used 45 mL of ether in one big extraction. Why isn't this better
Cyclohexyl carbocation undergoes attack by nucleophiles. With this in mind, propose a mechanism whereby cyclohexene might form the dimer 31 in the presence of H3O+. Note that this type of reaction leads to polymerization of cyclohexene.
you take stoichiometric amounts of 2-heptene c7h14 and oxygen in a sealed 1.500 l flask and allow them to react. the
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