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How many grams of PbSO4 are reduced at the cathode if you charge a lead storage battery for 1.85 h with a constant current of 13.4 A?
What is the molar heat of vaporiza-tion of C6H6 if the vapor pressure of C6H6 is 120 torr at 27 degree celsius, and its normal boiling point is 80.1 degree celcius.
If 1.0 mL of vinegar needs 22.5 mL of 0.195 M NaOH to reach the equivalence point in the titration, what is the molarity of the original vinegar solution?
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is ..
Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction:
describe how sp3 hybridization occurs in each atom. a) carbon b) nitrogen c) oxygen. If these elements use sp3 hybrid orbitals to form bonds, how many lone pairs of electrons would be found on each?
Determine what volume of N 2 is released at 0.915atm of pressure and at the temperature of 25 degree celcius from a tank full of liquid N 2 ? (d=0.808g/mL)
Determine the volume of sulfuric acid solution needed to prepare 37.4 g of aluminum sulfate, Al2(SO4)3, by the following reaction
what mass of solid LiOH must be added to 1.0 L of 1.35 M hydrofluoric acid solution in order to create a buffer solution
Assuming the final concentration of chloride anion after the addition of hcl (precipitation step) was 0.1M what is the remaining concentration of Ag in the solution
What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.30 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
If 5.50 of the unknown compound contained 0.183 moles of carbon and 0.367 mol of H of , how many moles of oxygen, , were in the sample?
Some of the cyclohexane solvent vaporized during the temperature versus time measurements. Will this loss of cyclohexane result in the freezing point of the solution being recorded as too high
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