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A solution of benzene (C6H6) and toluene (C7H8) is 25% benzene by mass. The vapor pressure of pure benzene and pure toluene at 25 oC are 94.2 torr and 28.4 torr, respectively. Assuming ideal behavior, calculate each of the following: • (i) The vapor pressure of each component in the mixture. • (ii)The total pressure above the solution • (iii)The composition of the vapor in mass percent.
Compute the radius of a cesium ion in CsCl if the density is 3.97g/cm3 as well as it is assumed that the ions touch through the body diagonal of the unit cell.
Write the balanced molecular equation for the combustion of methanethiol in an excess supply of oxygen.
Calculate the change in enthalpy and entropy of 50 g of liquid water starting at 10 degrees Celsius and completely evaporating into H2O gas at 100 C.
calculate the ph at the equivalence point for the titration of 0.10 M NH3 with 0.10 M Hcl. the Kb for NH3 is 1.8 10^-5.
Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible? why or why not?
Equal volumes of the two solutions are mixed. Assuming the reaction is first order in each reactant, what is the initial rate at 32 degrees C?
A sample of naphthalene, which should be pure white, was found to have a grayish color after the usual purification procedure. The melting point was correct, and the melting point range was small. Explain the gray color.
Do bonds break during the evaporation of the molecular substances hexane and 1-pentanol
a corrosion technologist pipetted a 100.00 ml hard water sample and titrated it with 37.64 ml of 0.01 m edta solution
One molecular form of elemental sulfur is a ring of eight sulfur is a ring of eight sulfur atoms. As one molecule of this element is burned to make sulfur trioxide, how many oxygen molecules are used?
A researcher added 2.06g of the salt sodium nitrate, NaN0subscript 3, to a cylinder containing water. The cylinder diameter is 2 inches and the depth of the water in the cylinder is 4 inches. Determone the concentration of salt in the solution
Use the dipole moments of and ( HCl= 1.08, Hf= 1.82) together with the percent ionic character of each bond ( HCl= 20% ionic, HF= 45% ionic) to estimate the bond length in each molecule.
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