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A radio wave has a frequency of 8.6 x 10^8 Hz. What is the energy of one photon of this radiation?
if 0.150 moles of salicylic and excess acetic anhydride are used during a synthesis of aspirin, how many grams of aspirin will be obtained if the reaction gives a 38% yield.
A 50.0 L cylinder contains nitrogen gas at a pressure of 21.5 atm. The contents of the cylinder are emptied into an evacuated tank of unknown volume. If the final pressure in the tank is 1.55 atm, then what is the volume of the tank
A robust first grader goes for swimming lessons three times a week, and he enjoys it thoroughly. During the first week of December, he develops an upper respiratory infection, starts coughing continuously, and has a high fever of 39°C.
What is the potential of an electrode consisting of zinc metal in a solution in which the zinc ion concentration
Find a) the average speed, b) the root-mean-square speed, and c) the most probable speed of these particles. Explain your results
A quantity of HI was sealed in a tube, heated to 425C, and held at this temperature until equilibrium is reached. The concentration of HI in the tube at equilibrium was found to be 0.0706 moles/liter
The temperature of the calorimeter and its contents increases from 20.00 C to 23.69 C. What is the heat capacity of the calorimeter (J/C)
what is the percentage yield if 400 grams of chlorine react with excess potassium bromide to produce 820 grams of bromine
Calculate the binding energy in kilojoules per mole of nucleons of P for the formation of 30P and 31P. The required masses (in g/mol) are 1^1H = 1.00783, 0^1n = 1.00867, 15^30P = 29.97832, and 15^31P = 30.97376.
A commercial plant is to treat 320 m3/hr of feed consisting of 50 % A, 50% inerts at 25 atm and 350ºC to obtain eighty percent conversion. Determine how many 2-m lengths of 2.5 cm ID pipe are required?
What is the partial pressure of each gas and total pressure of the mixture of gaases, in atmospheres, in the container?
show the acid catalyzed enamine product formation from 2-butanone and diethylamine
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