Physics, 27.06.2019 01:50, saintsfan2004
In order to study the photochemical decay of aqueous bromine in bright sunlight, a small quantity of liquid bromine was dissolved in water contained in a glass jar and placed in direct sunlight. the following data were obtained at 25 °c: time (min) 10 20 30 40 50 60 ppm br2 2.45 1.74 1.23 0.88 0.62 0.44 (a) determine whether the reaction rate is zero, first, or second order in bromine, and calculate the reaction-rate constant in unites of your choice. (b) assuming identical exposure conditions, calculate the required hourly rate of injection of bromine (in kg per hour) into a sunlit body of water, 25,000 gal in volume, in order to maintain a sterilizing level of bromine of 1.0 ppm. 2. for each of the following sets of reactions, describe your reactor system and conditions to maximize the selectivity to d. make sketches where necessary to support your choices. the rates are in (mol/l·s), and concentrations are in (mol/l)
Answers: 2
Physics, 21.06.2019 19:30, Fangflora3
11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?
Answers: 1
Physics, 22.06.2019 10:30, dontcareanyonemo
Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?
Answers: 1
Physics, 22.06.2019 10:30, austinwst3
You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
Answers: 2
In order to study the photochemical decay of aqueous bromine in bright sunlight, a small quantity of...
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