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The dienophile used by Woodward and coworkers as part of total synthesis of the choleasterol might have ract at either of the alkene double bonds. Jusitfy the formation of the observed Diels-Alder adduct.
A 515 g piece of copper tubing is heated to 95.0°C and placed in an insulated vessel containing 57.0 g of water at 30.0°C.
Find the volume of hydrogen evolved when 3.25g of zinc granules react completely with excess hydrochloric acid solution (Zn=65)
Calculate the amount of heat to remove from 5 pounds of 232 degrees steam to create 5 pounds of 162 degrees water.
In a gas mixture, the partial pressures are nitrogen 435 , oxygen 145 , and helium 240 . What is the total pressure ( torr) exerted by the gas mixture?
When 56.0 g calcium and 34.7 g nitrogen gas undergo a reaction that has a 88.0% yield, what mass of calcium nitride forms?
What bromination product(s) would you expect to obtain when the following compound undergoes ring mono-bromination upon reaction with Br2 and FeBr3. Only the organic product is required (draw the molecule)
A solution of 2.40 grams of the unknown hydrocarbon dissolved in 26.7 grams of naphthalene is found to freeze initialy at 76.2 Degree Celsius. Caluculate the apparent milar mass of the unknown hydrocarbon on the basis of the freezing-point depress..
Alcohols can be dehydrated to alkenes with sulfuric acid and alkenes can be used to prepare alcohols using sulfuric acid detail both mechanisms and explain the differences
Why can't diethyl ether form Hydrogen Bonds? (compared to 1-butanol). It has an Oxygen atom in the middle with lone pairs of electrons available. Is it because it's non-polar?
The normal boiling points of CO and SO2 are -192c and -10c, respectively. a) At 25c and 1 atm, which gas would you expect to have a molar volume closest to the ideal value
A battery is constructed based on the oxidation of magnesium and the reduction of Cu^2+. The initial concentrations of Mg^2+ and Cu^2+ are 1.2×10?4M and 1.6M, respectively, in 1.0-liter half-cells.
calculate the amount of heat requred to raise the temperature of 100.00 g of Mercury at 0.0000 c to 2.0000 c. repeat for 99.000 c to 101.000 c
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