38. A rate constant obeys the Arrhenius equation, the factor A being 2.2 x 1013 sl and the activation energy being 150. kJ mol". What is the value of the rate constant at 227°C, in s''? 2.1 x 1013 s...

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Extracted text: 38. A rate constant obeys the Arrhenius equation, the factor A being 2.2 x 1013 sl and the activation energy being 150. kJ mol". What is the value of the rate constant at 227°C, in s''? 2.1 x 1013 s 6.7 x 10-22 s- 1.5 x 10" s 4.7 x 103 s none of these choices is correct A. В. С. D. Е. 39. A reaction has an activation energy of 195.0 kJ/mol. When the temperature is increased from 200. °C to 220.°C, the rate constant will increase by a factor of А. 1.1 4.3 x 104 3.2 В. С. D. 7.5 Е. none of these choices is correct 40. The decomposition of dinitrogen pentaoxide to nitrogen dioxide and oxygen follows first-order kinetics and has an activation energy of 102 kJ/mol. By what factor will the fraction of collisions with energy greater than or equal to the activation energy increase if the reaction temperature goes from 30°C to 60°C? А. В. 1.00 1.10 C. 2.00 D. 4.00 E. 38.4