The temperature dependence of the reaction rate is usually expressed as follows: k = k. rt where k is the reaction rate constant; ko is a pre-exponential constant, e is the activation energy, r is the universal gas constant and t is the absolute temperature. however, the following expression is used for the bod (biochemical oxygen demand) test: kt, = kt, (o)(t3-t; ) a) show that a = ert, i and thus 0 is a function of t, and t2 b) determine the activation energy, e, if e = 1.047 and t2 =293 k and t = 273k
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Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 19:00
How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.
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Chemistry, 23.06.2019 02:30
Which words or phrases identify layers of groundwater? check all that apply. water table kettle lake saturation zone underground lake sinkhole will give brainiest, answer quickly.
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Chemistry, 23.06.2019 04:31
What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3
Answers: 1
The temperature dependence of the reaction rate is usually expressed as follows: k = k. rt where k...
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