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1) The vapor pressure of benzene (C6H6) is 73.0 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 279 g of benzene and 0.122 mol of a nonvolatile nonelectrolyte?
VP(solution) = _______ mm Hg
2) The common laboratory solvent chloroform is often used to purify substances dissolved in it. The vapor pressure of chloroform, CHCl3, is 173.1 mm Hg at 25 °C.
In a laboratory experiment, students synthesized a new compound and found that when 15.69 grams of the compound were dissolved in 222.0 grams of chloroform, the vapor pressure of the solution was 167.9 mm Hg. The compound was also found to be nonvolatile and a nonelectrolyte.
What is the molecular weight of this compound?
chloroform = CHCl3 = 119.4 g/mol
MW = ______________g/mol
Aqueous solutions of ammonium sulfide, (NH4)2S, and Hg(NO3)2 react to produce HgS and NH4NO3. a. Write the overall balanced equation for the reaction. Indicate the state (s, aq) for each compound. b. Name each compound. c. What type of reaction is..
What is the substance being oxidized?
The quantity of carbon released as carbon dioxide from agricultural expansion as well as deforestation over this period is estimated at 1.31e14 kilogram carbon. State the concentration of CO2 in the atmosphere in 2000 was 393ppm corresponding to a..
how many minutes does it take light from the sun to reach the earth? the distance from the sun to earth is 93 million
What is the concentration of the diluted solution in mg Fe/mL solution? What is the total mass of iron (Fe) in the 100 mL volumetric flask.
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
Identify the geometry of the iron(III) complex in water and the complex ions produced in the above reactions
The reaction AB-> A+b is second order in AB and has a rate constant of 0.0245 M^-1 S^-1 at 25.0 degree celcuis . A reaction vessel initially contains 250.0 mL of 0.108 M AB which is allowed to react to form the gaseous product.
The reaction between N2 and H2 to produce NH3 is an important industrial process. Using the information from your text and handouts (you may assume ideal gasses) calculate the equilibrium constant for this reaction at 400 ºC
The change in heat for the solution proecss when solid sodium hydroxide dissolves in water is 44.4 kj/mol. when a 13.9 g sample of naoh dissolves in 250.0 g of water in a coffee cup calorimeter, the temperature increases from 23.0 degrees C to how..
Compute the mass of Zn(s) necessary to produce 4.4 g of NO(g) when the metal comes into contact with excess nitric acid.
equilibrium constant-the concentration of solute in the organic phase is in the numerator of the KD expression and the concentration of solute in the aqueous phase is in the denominator.
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