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A cell is constructed at 298 K based on the reaction 2 Co3+(aq) + 2 H2O(l) H2O2(aq) + 2 H+(aq) + 2Co2+(aq), E° = 0.14 V. Calculate the pH in the anode compartment if the cell emf = 0.23 V when [Co3+] = 0.17 M, [H2O2] = 0.72 M and [Co2+] = 0.48 M. How? Show work.
3.84.31.61.11.9
A 20.0 mL sample of 0.150M KOH is titrated with 0.125M HClO4 solution. Calculate the pH after the following volumes of acid have been added.
Suggest simple laboratory tests you could use to distinguish acetone, carbon tetrachloride, cyclohexane, ethyl ether and ethanol.
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Suppose a 24.3-mL sample of helium gas at 25 °C and 1.01 atm is heated to 50. °C and compressed to a volume of 15.2 mL. What will be the pressure of the sample?
For a mixture of two gases, consisting of 1.00 mol of C2H6 and 1.00 mol of Kr, at a total pressure is 4.50 atm, what is the partial pressure of C2H6?
How does the first ionization energies change as you go from left to right across the periods; explain what causes the trend to fluctuate
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