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Problem- In a qualitative analysis procedure, a chemist adds HCl to an unknown group of ions and then saturates the solution with H2S so that the solution is 0.2 M in HCl and 0.10 M in H2S.
(a) What is the [HS -] of the solution? (Note: The answer should be rounded to one significant figure. Be careful, 3.5 rounds up to 4, but 4.5 rounds down to 4!)
Write your solution in appropriate format and provide references
In general terms, why do functional groups impart more chemical reactivity to families that have them. Why don't the alkanes display as many reactions as, say, the amines. Select all that apply
1. gold can be hammered into extremely thin sheets called gold leaf. if a 208-mg piece of gold density 19.32 gcm3 is
Aspirin is a monoprotic acid called acetylsalicylic acid. Its formula is HC9H7O4. A certain pain reliever was analyzed for aspirin by dissolving 0.431 g of it in water and titrating it with 0.0430 M KOH solution.
A voltaic cell is constructed by immersing a strip of silver metal in a 1.0 M AgNO3 solution and a strip of cadmium metal in a 1.0 Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way.
Exactly 150mL of 0.13M HNO2 is titrated with 100mL of 0.13 M NaOH. What is the pH at the endpoint.
Phosphorous acid, H3PO3(aq) is a diprotic oxyacid that is an significant compound in industry and agriculture. Compute the pH for each of the subsequent points in the titration of 50.0mL of a 3.0 M H3PO3(aq) with 3.0 M KOH(aq).
Compute the zero point energy for CO2 the symmetric stretch is 1313 cm-1, the asymmetric stretch 2335 cm-1 as well as the doubly degenerate bend is 663 cm-1.
What wavelength lambda should the astrophysicist look for to detect a transition of an electron from the n= 7 to the n=3 level
The temperature of the calorimeter increased from 24.5oC to 26.7oC. If the heat capacity of the calorimeter is 4.46 kJ (oC)-1, then what is the constant volume heat of combustion of this compound, in kilojoules per mole? (Remember to include a "+"..
when a blue copper(II)nitrate solution is mixed with a colorless solution of sodium sulfide
Estimate the mass of water that must evaporate from the skin to cool the body by 0.50^circ C. Assume a body mass of 85 kg and assume that the specific heat capacity of the body is 4.0 {rm{J}}/{rm{g}}; cdot ;^circ {rm{C}}.
Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1307?mg sample of menthol is combusted, producing 0.3678mg of CO2 and 0.1507mg of H2O.
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