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An aqueous solution contains metal cations Hg^+2 and Mn^+2 belonging to groups 2 and 3 respectively. Thioacetamide which produces H2S is added and the solution is buffered to a pH of 8 by addition of NH3/NH4Cl A) under these group 3 conditions what compounds will precipitate from solution B) if group 2 conditions are imposed by lowering the solution pH to 1 what compound(s) (if any) will remain precipitated?
a carboxylic acid reacts with water to form a carboxylic ion and H3O+ complete the following reaction
What is the average speed of the sprinter if A sprinter set a high school record in track and field, running 200. M in 22.0s .express your answer in kilometers per hour?
A 0.200 M solution of a weak monoprotic acid HA is found to have a pH of 3.00 at room temperature. What is the ionization constant of this acid?
Combustion of a 0.1000 g sample of a compound containing only carbon, hydrogen, and oxygen in excess yields 0.1953 g CO2, and 0.1000 g H2O. A separate experiment shows that the molar mass is 90 Daltons. Calculate the mass percent composition.
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
A reaction has the following rate law Rate = k[A][B]2. In experiment 1, the concentrations of A and B are both 0.10 mol L-1; in experiment 2, the concentrations are both 0.30 mol L-1. If the temperature stays constant, what is the value of the rat..
At equilibrium a 2L vessel contains .410 mol of H2, .130mol of Br2, and 36.0 mol of HBr. What is the equilibrium constant for the reaction at this temperature?
The vapor pressure of pure propyl chloride is 347 torr at 25°C and that of pure propyl bromide is 133 torr at 25°C. Assume that the solution is an ideal solution.
How much heat (in ) is evolved in converting 1.00 of steam at 130.0 to ice at -50.0? The heat capacity of steam is 2.01 and of ice is 2.09
The professor wants us to do the following: Outline all steps in the possible synthesis of each of the following compounds from benzene and / or toluene
A sample of water is collected over water at a total pressure of 616.8 mmHg at 300 C. The vapor pressure of water at 300 C is 31.8 mmHg.
A 1.80-L flask is filled with propane gas (C3H8), at 1.00 atm and -19.4°C. What is the mass of the propane in the flask.
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