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A voltaic cell consists of an Al/Al3+ half-cell and an Fe2+/Fe3+ half-cell. Calculate Ecell when conc. of Fe2+= 0.393 M, Fe3+= 0.055 M and Al3+= 0.187 M. Use the reduction potentials for Al3+ is -1.66 V and for Fe3+ is 0.77 V.
Explain the mass of helium-4 atom is 6.64648*10-24g as well as each of it's two electrons has a mass of 9.10939*10-28g. Explain what fraction of the atoms mass is contributed by its nucleus
A lake has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the percentage of aqueous NH3 in the lake
the volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the
An electron traveling at 2.4×105m/s has an uncertainty in its velocity of 1.04×105m/s .What is the uncertainty in its position?Express your answer with the appropriate units.
Problem- Find the temperature of a system after 100 g of Zn metal at 95 degrees C is immersed in 50 g of water at 15 degrees C. The specific heat capacity of zinc is 6.06 cal/molC and the specific heat caacity of water is 1.00 cal/gC
A 10.00 mL sample of a solution of hydrofluoric acid, HF, is diluted to 500 mL. A 20.00 mL sample of the diluted solution requires 13.51 mL
Question: Detailed explaination of pigeonhole diagram
How many moles of hydrogen gas occupy a volume of 559mL at standard temperature and pressure
Draw the possible side products that may occur in the bromination of trans stilbene by pyrdinium perbromide
A 50.0 mL sample of aqueous Ca(OH)2 requires 32.66 mL of a .812 M nitric acid for neutralization. Calculate the concentration (molarity) of the original solution of calcium hydroxide.
It is given that the v.p. of water =233.7 mm Hg.at 70 degree Celsius then calculate the vapor pressure? express your answer in mm Hg ?
Lucas Test. For each compund, drae its structure and note the amount of tome it takes for the soultion to become cloudy
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