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If a cell is set up with copper and lead electrodes in contact with CuSO4 (aq, 1.0 M) and Pb(NO3)2 (aq, 1.0 M), respectively, at 25 degrees C.
Define the standard cell potential is 0.47 V for the reaction: Cu2+ + Pb > Cu + Pb2+
Explain if solid sodium sulfate is added to the Pb(NO3)2 solution, a precipitate of PbSO4 will form. Utilizing Nernst equation to Predict how the cell potential will change.
A 55.0-L steel tank at 20.0°C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
A sample of krypton gas at 75.0 psi and 100 degrees Celcius expands from 0.100 L to 0.450 L. If the temperature remains constant, what is the final pressure
A fossil fuel containing 84% C, 15% H and 1%S is burned with 20% excess air in a boiler. The stack gases are at 150 C. a) What is the concentration (ppm) of SO3 in the stack if equilibrium is established according to
What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 30.00 mL of 0.10 M KOH. Assume that the volumes of the solutions are additive. Ka = 1.8 × 10-5 for CH3CO2H.
What ions and/or molecules are present in relatively large proportions in a solution of a soluble ionic compound K2S (aq)
What is the theoretical yield of vanadium that can be produced by the reaction of 40.0g of V2O5 with 40.0 g of calcium based on the following chemical reaction.
Calculate the molar mass of the biomolecule. for carbon tetrachloride, the boiling-point constant is 5.03 degrees C x kg/mol, and the boiling point of pure carbon tetrachloride is 76.50 degrees C.
a solution of 22.0g cacl2 in 100.0 cm3 of water has a vapor pressure of 22.8 torr at 26 celsius. why does this result
the equilibrium constant for the hydrolysis of the dipeptide alanylglycine by a peptidase enzyme is k 8.1 x 102 at 310
A buffer is prepared by mixing 295 mL of 0.210 M HCl with 584 mL of 0.559 M ammonia (NH3). Given that the Kb of NH3 is 1.8 x 10-5, calculate the pH of the solution.
The current concentration of carbon dioxide in the atmosphere is 378 ppmv. Annual anthropogenic additions to the atmosphere are about 8 Gt (as C) of which about 4 Gt are removed into the oceans and terrestrial environment.
Consider the following species: Ca, Br1-, Fe2+ , Cu+, Co3+. Li+. List the oxidizing agents. List the reducing agents. (Some could be both.) Which is the best oxidizing agent
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