eaponu General Chemistry 4th Edition McQuarrie • Rock. Gallogly University Scien

Question

eaponu General Chemistry 4th Edition McQuarrie • Rock. Gallogly University Science Books presented by Sapling Learning Suppose that you place exactly 100 bacteria into a flask containing nutrients for the bacteria and that you find the following data at 37 °C: t (min) Number of bacteria 100 200 20.0 40.0 60.0 80.0 400 800 1600 What is the order of the rate of production of the bacteria? How many bacteria will be present after 1.80 x 102 min? Number bacteria zero order first order second order What is the rate constant for the process? Number units Select answer k=

Explanation / Answer

first order rate constant

k = 1/t * ln [At / Ao]

k = 1/ 20 * ln (200 / 100)

k = 0.0347 min-1

now time 180 min

0.0347 = 1/ 180 * ln (At / 100)

At = 51183

number bacteria = 51183

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