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Urea (CH4N2O), can be synthesized by the reaction of ammonia (NH3) with carbon dioxide (CO2):
2NH3(aq) + CO2(aq) à CH4N2O(aq) + H2O(l)
An industrial synthesis of urea obtains 87.5 kg of urea upon reaction of 68.2 kg of ammonia with excess carbon dioxide. Determine the theoretical yield of urea and percent yield for the reaction.
explain how to correct for the partial of water vapor when calculating the partial pressure of a dry gas is collected
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 ..
is believed to follow the mechanism H2O2 + I- ? H2O + IO- fast H2O2 + IO- ? H2O + O2 + I- slow At 25oC, the first step is fast relative to the second step. What is the rate law predicted by this mechanism?
eject electrons from a mixed alkali metal photocathode, what is the longest wavelength in nm of light necessary to eject these electrons by the photoelectric effect?
what types of intermolecular forces are found in crude oil?discuss the solubility in water of some organic compounds
A given mass of gas occupies a volume of 4.00 L at 60°C and 550 mmHg. Which of the following mathematical expressions will yield its temperature at 3.00 L and 775 mmHg?
At what temperature would a 1.20 M NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? K_f for water is 1.86 C/m
Give a brief discussion of the chemistry of Diels-Alder reactions and why do ENDO products usually predominate
Include all reaction steps, a detailed mechanism and all reagents necessary. Make a note of any special purification steps if necessary. Synthesize 1,3,5-tribromobenzene from benzene or toluene.
An astrophysicist working at an observatory is interested in finding clouds of hydrogen in the galaxy. Usually hydrogen is detected by looking for the Balmer series of spectral lines in the visible spectrum. Unfortunately, the instrument that dete..
Rubidium has a heat of vaporization of 69.0 KJ/mol and entropy of vaporization of 71.9 J/K mol. Compute the boiling point of rubidium.
Determine an expression for the change in entropy when two blocks of the same substance and of equal mass, one at temperature T1 and the other at T2 are brought into thermal contact and are allowed to reach thermal equilibrium. Evaluate your answe..
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