15 Supplement Chem Eq

15 Supplement Chem Eq - Review the following two Arrhenius...

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1 1 Review the following two Arrhenius equation problems! 2 Fireflies flash at a rate that is temperature dependent. At 29 o C the average firefly flashes at a rate of 3.3 flashes every 10 seconds. At 23 o C the average rate is 2.7 flashes every 10 seconds. Use the Arrhenius equation to determine the activation energy for the reaction that causes the flashing. 0 o C = 273 K R = 8.314 J mol -1 K -1 A) 12 kJ/mol B) 25 kJ/mol C) 50 kJ/mol D) 75 kJ/mol E) 95 kJ/mol H L a H a L a L a H a L a H a a T T R E RT E RT E RT E RT E RT E RT E L H RT E e e e e e e k k Ae k 1 1
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2 3 Fireflies flash at a rate that is temperature dependent. At 24 o C the average rate is 18 flashes/minute. Biological chemists have found that the activation energy for the reaction causing the flashing is 25 kJ/mol. Use this information to determine the temperature when fireflies are flashing at the rate of 25 flashes/minute. 0 o C=273 K R=8.314 J mol -1 K -1 A) 14 o C B) 29 o C C) 34 o C D) 39 o C E) 41 o C H L a L H T T R E RT E RT E L H RT E T T R E k k e e k k Ae k H L a H a L a a 1 1 ln 1 1 4 Ch 14 Chemical Equilibrium Reviews some issues previously discussed. Introduces some new issues. Key questions! What do we mean by chemical equilibrium?
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This note was uploaded on 11/14/2010 for the course CHE 131 taught by Professor Kerber during the Spring '08 term at SUNY Stony Brook.

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15 Supplement Chem Eq - Review the following two Arrhenius...

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