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Calculate the ratio kcat/kuncat. A) A reaction has Horxn = -120. KJ/mol and a forward activation energy, Ea = 80. kJ/mol. What is the activation energy for the reverse reaction? Describe the reaction as endothermic or exothermic, and reversible or irreversible. B) A reaction has Horxn = 5.0 kJ/mol and a forward activation energy, Ea = 55 kJ/mol. What is the activation energy for the reverse reaction?
What is the frequency of ultraviolet light with wavelength 2.51 × 10-8 m? (c = 3.00 × 108 m/s)
Calculate the amount of energy released by the freezing of 13.3 g of a liquid substance, given that the substance has a molar mass of 82.9 g/mol and a molar heat of fusion of 4.60 kj/mol.
What is the theoretical yield of bromobenzene in this reaction when 30.0 g of benzene reacts with 65.0 g of bromine?
Calculate the expected change in temperature for 4.5 g of NH4NO3 dissolved in 100.0 mL of H2O. Assume that the calorimeter absorbs no heat.
What volume will 500 mL of gas at 20°C and a pressure of 420 mm Hg occupy if the temperature is reduced to -80°C and the pressure increased to 650 mmHg?
Calculate the pH of a buffer solution that is 0.200 M HC2H3O2 and 0.100 M in NaC2H3O2. Calculate the pH of the buffer that reults from mixing
Determine the pH of the solution resulting from the combination of 40.0 mL of 0.200 M Perchloric acid and what is the mass in mg
In the haloform reaction, once the first alpha-hydrogen atom is replaced by a halogen atom, each successive hydrogen is more easily substituted
One Way of purifying gaseous H2 is to pass it under high pressure through the holes of a metal's crystal structure. Palladium, which adopts a cubic closest packed structure
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
A sample of 255mg of neon occupies 3.00dm3 at 122K. Use the perfect gas law to calculate the pressure of the gas.
The stopcock between a 3.00 L bulb containing oxygen at 295 torr and 1.00 L bulb containing nitrogen at 530 torr is opened. What is the total pressure of the mixture.
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