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Construct an approximate boiling point composition diagram for a Benzene-Methanol system. The mixture shows azeotropic behavior. Include on the graph the boiling points of pure benzene and pure methanol and the boiling point of the azeotrope. Describe the behavior for a mixture that is initially rich in Benene (90%) and then for a mixture that is initially rich in methanol (90%).
A volume of 125 mL of H2O is initially at room temperature (22.0*C). A chilled steel rod at 2.00 *C is placed in the water. If the final temperature of the system is 21.1*C, what is the mass of the steel bar?
sulfuric acid acts as a catalyst for making esters. Write an equation showing the production of Isoamyl alcohol
The Lyman series in the hydrogen atom corresponds to transitions that originate from the n=1 level in absorption or that terminate in the n=1 level for emission. Calculate the energy, frequency, and wavelength of the least and most energetic transiti..
Ethanol (molar mass = 46 g/mol) can be dehydrated to yield ethene (molar mass = 28 g/mol) by heating it with an excess of concentrated sulfuric acid (acting as a catalyst).
An aqueous solution is six percent by mass methanol,, and has a density = 0.988 g/mL. Determine the molarity of ethanol in the solution.
Calculate the delta G at 400K for the following phase change: Sulfur(monoclinic) to sulfur rhombic. Do not assume that delta H or delta S are independent of temperature
If you were to dissolve 15.0 mg of the antibiotic in 546 mg cyclohexane, at what temperature would you expect this solution to boil
explain why this series of reaction will produce the 3,5-dibromotoluene and direct bromination of toluene produces the 2,4-dibromotoluene.
at 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa when 20.0 % had reacted.Determine the order of reaction.
How many joules of energy are needed to melt 54 grams of ice at its melting point? Assume that the molar heat of fusion of ice is 6 kJ/mol.
Suppose that 5193.0 J of heat energy is added to 7 g of ice initially at -10 C. (This could be done, for example, by electrical heating of ice in an insulated container.) What is the final temperature of the water
Neon crystalizes in a face-centered cubic lattice. It's density is 1.45 g/cm3. What is the edge length of the unit cell? Note: The atomic weight of Ne is 20.2 g/mol, and Na is 6.02 x 10^23/mol
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