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E. The Zebra cell was invented in 1985 in South Africa as part of the Eolite Battery Research Africa project, and is used in all-electric municipal buses and other vehicles. It uses nickel and molten sodium as its electrodes. Its overall cell reaction is
NiCl2(l) + 2Na(l) <--> Ni(s) + 2NaCl(l)
1.What is the Eo for the Zebra cell?
2.Are the reactants in this battery at room temperature when it is operating? Explain how you know.
F. Concrete used in road construction is reinforced using steel bars in a grid, known collectively as After many years, rebar will begin to corrode, and the concrete will weaken. Studies are ongoing regarding the best metal to be a sacrificial anode to prevent corrosion of the rebar. Which would work better for the purpose, magnesium or zinc? Explain your answer based on the oxidation potentials for each metal.
G. How many grams of copper can be reduced (plated out) by applying a 4.00 amp current for 53.0 minutes to a solution containing Cu2+ ions?
what is the partial pressure of helium? If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?
The vapor pressure of water at 20oC is 17.5 mmHg. What is the vapor pressure of water (in mmHg) over a solution prepared from 258 g sucrose (C12H22O11) and 350 g water?
The Rb-Sr data given below are for whole-rock samples from amphibolite metamorphic facies of theLewisian gneiss complex in Scotland (Moorbath et al., 1975), and the Sm-Nd data are for whole-rocksamples from granulite metamorphic facies of the same..
Suppose 1.07 g of FeCl3 is placed in a 75.0 mL volumetric flask, water is added, the mixture is shaken to dissolve the solid, and then water is added to the calibration mark of the flask. Calculate the molarity of each ion present in the solution.
Which solution will have the lowest boiling point?
How many lone pairs of electrons are there in a molecule of crotononitrile?
If a sample of pure silver (Ag) contains 3.35 x 1022 atoms of silver, how many moles of silver are in the sample?
what determines the order in which the component elements of binary compounds are written?
How many grams of HCl are required to react with the 344 grams of FeCl2?
If you have 60.5 g NH3, how many grams of F2 are required for complete reaction?
What is the minimum amount of 6.0 M H2SO4 necessary to produce 20.0 g of H2? according to the following reaction. 2Al(s)+3H2SO4(aq)-->Al2(SO4)3(aq)+3H2(g)
showing electron flow with arrows, for the acid-catalyzed hydrolysis of ethyl acetate to acetic acid and ethanol- the reverse of a Fischer esterification reaction.
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