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A voltaic cell utilizes the following reaction and operates at 298 K:
3Ce4+(aq)+Cr(s)→3Ce3+(aq)+Cr3+(aq).
What is the emf of this cell when [Ce4+]= 2.5 M, [Ce3+]= 1.9×10-2 M , and [Cr3+]= 1.1×10-2 M?
What is the emf of this cell when [Ce4+]= .39 M, [Ce3+]= .77 M, and [Cr3+]= 1.3 M ?
Classify each of the pure substances D through G as elements or compounds, or indicate that no such classification is possible because of insufficient information
In a calorimeter, 100 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed.
assuming that the gas behaes ideally. Then repeat the calculation by using the van der Waals equation
When you standardized the Sodium thiosulfate, what molarity of Na2S2O3 did you observe for each of your 3 trials.
Calculate the work, heat, energy and enthalpy change upon: a) expansion by 3.3 L at p=const (isobaric). b) isothermal expansion by 3.3. L against a constant external pressure of 30.0 kPa c) reversible isothermal expansion by 3.3 L.
A buffer solution of a weak acid and its salt had a pH of 5.51 when the acid was 0.221 M and the anion was 0.928 M. Calculate the equilibrium dissociation constant (Ka).
Define when 0.593 g of an unknown solute is dissolved in 14.9 g of water; the freezing point is depressed by 1.74 Celsius degree. Evaluate the molecular weight of the unknown solute, assuming that it is a nonelectrolyte
Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide?
understanding of chemistry basics.1. boltzmanns critics claimed his work was unscientific because he.a. presented his
A 0.4564 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate. The mass of the resulting AgBr is found to be 0.8815 g.
Explain how does the potential being greater than total energy affect the wave function. Does it affect how to solve the Schrodinger equation
When you burn methane, it unites with oxygen to form carbon dioxide and water. Write an equation to balance the reactants and products of this reaction.
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