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A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 14.55 % naphthalene by mass. Calculate the vapor pressure at 25 °C of hexane above the solution. The vapor pressure of pure hexane at 25 °C is 151 torr.
React cis-2-butene with O3 in the presence of a Zn catalyst. What product or products are formed. Draw the product or products. If you react trans-2-butene in the same manner, will you get the same products as with the cis isomer. Explain
what is the degree of purification (fold purification). what is the percent yield of the enzyme recovered in the purified fraction
How many grams of F- should be added to give 1.6 ppm? Fluoride is provided by hydrogen hexafluosilicate, H_2SiF_6. How many grams of H_2SiF_6 contain this much F-?
Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.1 L to 3.5 L against a constant external pressure of 3.5 atm
What pressure of O2 would be required to have a solution of 1.5X10^-3g of O2 in 250g of H2O at 298K?
Compute the packing efficiency for an fcc lattice, keeping in mind that the close-packing direction is along the body diagonal, yielding a row of atoms along a face diagonal (i.e., the face diagonal = 4r). How does this compare to primitive cubic ..
The lab manual suggests that KMnO4 can oxidize an alkene into a diol before cleavage of the C-C bond. If the reaction was stopped at the diol stage (as suggested in Chapter 8 of Wade), what diols would beproduced from the Z and E isomers of 2-pentene..
What would be the first singlet excited state of the starting material? Give its abbreviation and draw an energy diagram for the relevant orbitals involved.
A white precipitate formed with barium chloride, BaCl2: what is the chemical equation for the reaction of the reagent with the ion
Write balanced complete ionic equation for the following equation: Express your answer as a chemical equation.
The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 395 g of pure Cu?
A portable water heater transfers 225 watts of power to 5.5 L of water. How much time will it take the water heater to heat the 5.5 L of water from 22 to 40 degrees Celsius?
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