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A method for determining the quantity of dissolved oxygen in natural waters requires a series of redox reactions. Balance the following chemical equations in that series under the conditions indicated (Include phases in the balanced chemical equation):
In basic solution: Mn^2+(aq)+O2(g) ------> MnO2(s)
Consider two aqueous solutions, A and B (which contain different solutes). Is it possible for solution A to have a greater concentration than solution B in terms of mass percent, but a smaller concentration in terms of molarity
Compare and contrast the number of representative particles and the mass of UF6 with the number of representative particles and mass of CCl3CF3. Explain any differences you observe.
The following lab requires water free conditions as well as reflux for reaction to be successful. Draw a schematic and label your reaction set up
An empty volumetric flask, weighing 60.42 grams, weighed 309.60 grams when filled with water. After emptying the water and drying the flask
Kb of ethylamine, urea and ammonia are 5.6 x 10-4, 1.5 x 10-14, 1.8 x 10-5, respectively. Arrange these bases in the increasing order of basicity
A is allowed to come in contact with substance B. B has a mass of 46.28 grams and its initial temperature is 86.5oC. These two substances reach thermal equilibrium at a temperature of 64.2oC. If the specific heat capacity of substance B is 1.17 J/..
What is the pH of a solution that is formed at 25C by combining 300 mL of 0.040 M NaOH with 400 mL
The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6 . What is the Ksp of barium carbonate?
Explain using Le Chatelier's principle the results obtained when 6.0 M NaOH was introduced into the iron (III) thiocyanate equilibrium.
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution.
Large quantities of hydrogen are needed for the synthesis of ammonia. One preparation of hydrogen involves the reaction between carbon monoxide and steam at 300 degrees Celsius in the presence of a copper-zinc catalyst
What is the specific heat of aluminum if the temperature of a 28.4 g sample of aluminum is increased by 8.1 oC when 207 J of heat is added.
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