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Use Hess's law and the measured mean enthalpy changes for the NaOH-HCl(36.2) and NH3-HCl(31.9) reactions to calculate the enthalpy change to be expected from the reaction: NaOH + NH4Cl----NaCl + NH3 +H2O
Name the highly volatile liquid may cause grave danger to The Environmental Health & Safety and Fire Safety professionals at happening scenes as its vapor
Which of the following is less soluble in hexane, ethanol or CCl3H(l). Don't try to type the subscripts, just use letters and numbers.
In a solution of pure water, autoionization occurs producing conjugate acid-base pairs in solution.
Separate samples of an aqueous solution of an unknown ionic salt are treated with dilute aqueous solutions of hydrochloric acid, sulfuric acid, and potassium hydroxide. Precipitates are formed in all three cases.
Explain how you would prepare 100.0mL of a solution, using pure solute and water, that is 5 v/v% C2H6O(ethanol).
the rate constant for the second order -reaction is NOBr(g)------>NO(g)+1/2Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose
When 9.25 g of ClF3 was introduced into an empty 2.00 L container at 700.0 K, 19.8 % of the ClF3 decomposed to give an equilibrium mixture of ClF3, ClF, and F2.
In an experiment, at this temperature, 1.10 mol of H2 and 1.10 mol of F2 are introduced into a 1.08-L flask and allowed to react. At equilibrium, all species remain in the gas phase.
A solution of acid was found to have a hydrogen ion concentration of 0.03 mol dm-3 what is the pH of the solution?
Calculate the Standard Enthalpies & Standard Entropies for each reactant & product at the temperature given first, then determine the ?H°rxn and ?S°rxn at 1600 K Zr(beta) + O2 = ZrO2(beta) Other information:
Consider the gases CH4, O2, and CO2, all at the same temperature. Arrange the gases in order of increasing average molecular speed. How does the average EK of the gases compare
The density of ethanol is 0.7893 g/mL. What is the volume of 3.5 grams of ethanol. Of 7.0 grams of ethanol.
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