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The heats of reaction for the following combustion reactions were determined experimentally: C2H4(g) + 3 O2(g) ? 2 CO2(g) + 2 H2O(?) ?H = -1411.1 kJ C2H5OH(?) + 3 O2(g) ? 2 CO2(g) + 3 H2O(?) ?H = -1367.5 kJ Considerig the above reactions, what is the heat of reaction for the synthesis of thanol from ethylene and water: C2H4 + H2O(?) ? C2H5OH(?) ?H = ?
How many grams of the solid can be formed from 286 grams of calcium nitrate and 136 grams of Phosphoric acid?
Explain the valences for each, showing what may happen to the electronic structure in each case
Which of the following hand tools would be classified as "chiral?" Ignore any writing that might normally appear on the tool
what concentration of nitrogen oxide is the rate 2.0x10^-6 mol/L-min and the bromine concentration one fourth of the nitrogen oxide concentration?
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 9.00? kb for ammonia is 1.8*10^-5.
Calculate what the pH is at 0 mL added strong acid, the quarter-, half-, and three-quarter-equivalence points, the equivalence point, and when excess acid has been added.
Using the values for the resonance energies of benzene and naphthalene given above, explain why Diels-Alder reactions of anthracene take place at the center ring, not one of the end rings.
Determine the concentration of a solution prepared by diluting 25.0 milliliters of a 12 molar HCl solution with H2O until the final volume is 2.50 x 10² milliliters.
What difference in their structural properties renders the triethylene glycol the only one that will work?
A small bubble rises from the bottom of a lake, where the temperature and pressure are 8ºC and 6.4 atm, to the water's surface, where the temperature is 25ºC and pressure is 1.0 atm.
What mass of CaCl2, when dissolved in 100.00g of water, gives an expected freezing point of -5.0 degrees celcius; CaCl2 is ionic?
The mercury in a 0.7325 gram unknown sample was precipitated with excess par aperiodic acid, H6IO5, according to the following balanced chemical equation:
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