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If a copper-containing compound is found to be 29.2% Cu by mass, and there is only one copper atom per formula unit, what is the formula mass of the compound in amu?
A 0.035L balloon is inflated to a pressure of 52.0kPa. What is the volume of the balloon if the pressure is decreased to 30.8kPa?
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
Determine the enthalpy of the reaction. Assume that the density and the specific heat of the solution are the same as water. Incude the correct sign.
Write an equation for the formation of an aqueous solution
Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium hydroxide
The pH of uncontaminated rain water is about 5.6. The pH of rain falling in Cleveland, OH is 4.2 and that in Omaha, NE is 5.5. What is the concentration of hydrogen ions in the rainfall of each city? [H] 6.3 ^ -5 for Cleveland.
Choosing CO^2+, write a series of two balanced chemical equations representing the reaction that occurs when HCl and NH3 are added to an aqueous solution of the transition metal cation.
how could you use this information to design a crystallization procedure?
5.00 moles of CO2(g) is in a rigid container with a volume of 3.00 liters. The initial temperature is 291 K and the initial pressure is 33.3 bar. Then 4.95 kJ of energy is added to the gas as heat; this raises the temperature to 325 K and raises t..
design a molecule with three chiral centers and draw eight possible stereoisomers of the molecule.
When ethylamine, a weak base (Kb=4.3E-4), reacts with the formic acid, a weak acid (Ka=1.8E-4), the following reaction takes place: Calculate K for this reaction.
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years . How long will it take in years for 40.0 % of an Am-241 sample to decay
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