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Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. Suppose 246 g of Na metal is formed.
(a) How many moles of electrons are required?(b) How many coulombs are required?(c) How many amps are required to produce this amount in 8.50 h?
A spring loaded piston cylinder device is initially filled with 0.2 lbm of an R-134a liquid vapor mixture whose temperature is -30 deg F and whose quality is 80 percent. The spring constant in the spring force relation F=kx is 37 lbf/in
how much ice in grams would have to melt to lower the temperature of 358 g of water from 40 degrees to 0 degrees?
Aqueous silver nitrate was then added to precipitate the Cl- and Br- ions as AgCl and AgBr. The mass of silver halides obtained was 0.9974 g. What are the molarities of HCl and HBr in the original solution
if iodine gas reacts with excess fluorine gas to produce 7.575g of iodine pentafluoride gas what was the pressure of
Suppose solute A has a distribution coefficient of 1.0 between water and diethyl ether. Demonstrate that if 100 ml of a solution of 5 g of A in water were extracted with two 25 ml portions of ether a smaller amount of A would remain in the water t..
Molecular Mass by Freezing point Depression (Preliminary Lab).
what mass of naphthalene must be dissolved in 24000 grams of benzene to give a solution with a freezing point 3.00 celsius below that of pure benzene?
Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules. (Draw complete Lewis structures.
used the 8900 kilojoules you expend in energy in one day to heat 50000 of water at 20 what would be the rise in
In the ultramicro-boiling point determination, why is the b.p take just as bubble cease from the bell. what is inside these bubbles
A solution of a weak acid, HA, is prepared by dissolving 4.8 mmol of HA in 10.0 liters of a solution.The following values of absorbances were measured in a 1.0 cm cell in various buffers.
The oxygen on the mineral surface gave emitted electron energies at 531 eV, corresponding to the 1s orbital of oxygen. Overall the researchers concluded that oxidation states were +2 for Hg and -2 for O.
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