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Isopentane (a.k.a. 2-methylbutane) is a compound containing a branched carbon chain. A Newman projection is given for six conformations about the C2-C3 bond of isopentane. On the curve of potential energy versus angle of internal rotation for isopentane, label each energy maximum and minimum with one of the conformations.
A 0.5078g sample of impure nitrobenzene was treated with 1.044g of tin. when the reaction was complete, the residual tin was found to weight 0.338g. Calculate the percentage of nitrobenzene in the sample.
Add the angular wave function for a 2s electron of Carbon to that of a 2py electron of the same carbon atom. Subtract one from the other. In what direction do the functions point? What orbitals are "left" unused on the C atom?
A 4.10 g nugget of pure gold absorbed 292 J of heat. The initial temperature was 28.0°C. What was the final temperature.
KEtones also undergo the aldo condensation, although a succesful reaction often requires "enhanced" conditions, since the addition involves an unfavorable equilibrium constant.
Determine how many pills does the female require to take each time she wants the dosage of 375miliigrams?
Determine the chemical formulas for a covalent compound whose molecules contain 2 carbon atoms, 6 hydrogen atoms and an oxygen atom
A 1.8M solution of 65 mL is diluted to a volume of 248 mili litres. A portion of that solutions 124-mili litres is diluted using water of 137 mili litres. Determine the final concentration of this solution?
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
calculate delta U and delta H for the process on the basis of 1 mol of gas. Assume for the gas that PV/T is constant, Cv= (5/2)R, and Cp=(7/2)R.
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400. g of water.
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