Bennyskies
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2008 NQE Paper
Q5 The bond dissociation energies of a C-Cl bond and a C-F bond are 397 kJ/mol and 552 kJ/mol respectively. What is the minimum energy required to break any of the bonds in trichlorofluoromethane (CFCl3)
A) 397kJ, B) 552 kJ C) 5.72 eV D) 9.17 x 10^-22 E) 4.12 eV
Q10 Given that the average kinetic energy of a molecule at a temperature T is given by kinetic energy = kT, where k= 2.07 x 10^-23 J/K and that kinetic energy is related to speed by kinetic energy = mv^2/2, what is the approximate speed of the average molecule of air at room temperature?
A) 5m/s B) 50m/S C) 500m/s D) 5000 m/s E) 50000 m/s
Q5 The bond dissociation energies of a C-Cl bond and a C-F bond are 397 kJ/mol and 552 kJ/mol respectively. What is the minimum energy required to break any of the bonds in trichlorofluoromethane (CFCl3)
A) 397kJ, B) 552 kJ C) 5.72 eV D) 9.17 x 10^-22 E) 4.12 eV
Q10 Given that the average kinetic energy of a molecule at a temperature T is given by kinetic energy = kT, where k= 2.07 x 10^-23 J/K and that kinetic energy is related to speed by kinetic energy = mv^2/2, what is the approximate speed of the average molecule of air at room temperature?
A) 5m/s B) 50m/S C) 500m/s D) 5000 m/s E) 50000 m/s
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