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Predict the electronic configurations of (a) the benzen anion, (b) the benzene cation. Estimate the pi-electron binding energy in each case within the Huckel Approximation. Hint. Use mathematical software.
Delta H of combustion of benzoic acid is 3.22 x e3 kJ/mol. 0.5 g of benzoic acid was burned in a calorimeter containing 1000.0 g of water. The change in temperature of the calorimeter was 3 degrees C. Calculate the heat capacity of the calorimeter..
What mass of sodium phosphate would have to be added to 2.0 of this solution to completely eliminate the hard water ions? Assume complete reaction.
How many grams of FeSO4 are there in 206 grams of an aqueous solution that is 14.0 % by weight FeSO4.
A mixture of CO, CO2 and O2 is contained within a 275 mL ?ask at 0?C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr.
Otane has a density of 0.692 g/mL at 20°C. How many grams of O2 are required to burn 5.95 gal of C8H18?
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution?
Pure liquid water can be supercooled to temperatures below its freezing point. Consider 10 kg of water cooled as a liquid to -10 Celsius. Let's now add a small crystal of ice (whose mass is negligible) as a "seed"
what concentration in ppm would it constitute? The effective volume of the earth's atmosphere is about 4.2 billion km^3, and take the average pressure to be 550 mm Hg and the average temperature to be -10 degrees C. The molar mass of air is 29 g/m..
What is the major purpose of doing distillations in organic chemistry. What is the secondary purpose
Calculate the percent by weight, mole fraction and mole percent of each component in a mixture consisting 9g of water (H2O), 120g acetic acid(CH3COOH) and 115g of ethyl alcohol (C2H5OH).
What might have happened if the temperature of the oven were set to 210 degrees
Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added
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