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Explain An electrochemical cell is constructed of one half-cell in which a silver wire is placed into a 1.0M aqueous solution ofAgNO3, and the other half cell consists of a zinc electrode in an aqueous solution of Zn(NO3)2that is also 1.00M.
a) State a balanced chemical equation for the spontaneous reaction that occurs in this cell under standard conditions.
b) Define what is Eo for this cell?
c) Define what is the ΔGo for this cell?
d) State a cell diagram for this cell.
e) Define what would be the E for the cell at 35.0 Celsius when Ag+ is 0.50M and Zn2+ is 1.0M
Compound A is a water-soluble liquid that gives positive 2,4- dinitrophenylhydrazine and iodoform tests and a negative Tollens test. The IR spectrum of A has bands at 2950, 1720 and 1370 cm-1.
If you add 62.5 mL of a 3.00 M HBR solution to 187.5 mL of water to make a new solution, the concentration of the new HBr solution is what
CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The reaction that occurs is Substance CaO(s) + H2O(l) = Ca(OH)2(s)
A reaction at 1.83 atm produces 11.9 L of a gas and evolves 91.3 kJ of heat (exothermic). Calculate the change in internal energy of the system (in kJ).
describe how these limestone objects are corroded by the sulfuric acid in polluted air, what chemical reaction is involved here?
a student reported the follow ing percentages for his unknown mixture 25nh4cl 30 nacl and 50 sio2. assuming that the
the molar heat of fusion of aluminum metal is 10.79 kjmol whereas its heat of vaporization is 293.4 kjmol.what quantity
how many grams of metallic copper can be obtained when 54.0 grams of Aluminum react wit 319 grams of CuSO4?
A 16 ounce specialty coffee drink contains 216 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution. What is the percent ionization.
Suppose that you had a sample containing 75% by weight Potassium Chlorate and 25.0% inert nonvolatile material. What weight loss should you observe after intense heating, if the original sample weighed 1.100 g
The UV absorbance at 280 nm is another means of protein quantization that does not rely on the production of a colored product for analysis. Illustrate this method of quantization including what aromatic structures absorb at 280 nm.
An atomic emission spectrum of hydrogen shows the following three wavelengths: 1875nm, 1282nm, and 1093nm. Assign these wavelengths to transitions in the hydrogen atom.
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