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An electrolysis experiment is conducted with fused CaCl2. How long would it take to deposit 1.00 grams of calcium if a current of 10.00 amps was used?
A gaseous mixture contains 450.0 Torr of H2(g), 325.5 Torr of N2(g) as well as 73.3 Torr of Ar(g). Compute the mole fraction, X, of each of these gases.
An aqueous solution containing 35.8 g of an unknown molecular (nonelectrolyte) compound in 156.7g of water was found to have a freezing point of -1.4 degrees C. Calculate the molar mass of the unknown compound.
What are the concentrations of HSO4- and SO42-, respectively for a 0.0050 M sulfuric acid solution
If 155 of wet is collected over water at 24 and a barometric pressure of 738 , how many grams of have been consumed? (The vapor pressure of water is 22.38 .)
Calculate the percent ionization of 7x10^-3 M butyric acid in a solution that already contains 8x10^-2 m Butanoate. (Ksp for the butanoic acid is 1.5x10^-5
Explain what the approximate ranges Eg in eV for different colors--color meanings black, white, or actually having a true color green yellow, blue and so on.
Require to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.200 M sodium benzoate. Explain how much benzoic acid and sodium benzoate must be mixed to prepare this buffer
What are the concentrations of a weak formic acid (HCOOH) anf formate ions (HCOO-) in a 0.350 M formate buffer, pH 4.25? (pKa = 3.75): The formic buffer is composed of weak formic acid and its formate salt
What is the molar concentration of a solution prepared by dissolving 0.6593 g of NaCl in a 100-mL volumetric flask
a flammable gas made up only of carbon and hydrogen is found to effuse through a small hole in 1.50 min. under the same
What NaCl concentration results when 214mL of an .087M NaCl solution is mixed with 517mL of a .250M NaCl solution
a a 10.0 g sample of a mixture of methane ch4 and ethane c2h4 reacts with oxygen at 25c and 1 atm to produce carbon
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