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How many grams of Cu and what volume of O2 gas will be obtained if 18.4 ampere electric current is passed through the electrolytic cell of CuSO4for 1 hour and 42 minutes between graphite electrodes at 208 K temperature and 1 bar pressure? (Cu=63.5u O=16u) How to calculate?
Suppose a piece of silver jewelry contains 6.53×1022 atoms of silver (Ag). How many dozens of silver atoms are in the piece of jewelry. Express your answer numerically in dozens.
Given 6.4 mL of sulfuric acid (98%) calculate the number of mmols. (MW H2SO4: 98.08 g/mol, density: 1.840 g/mL)
A reaction X2 + XY + Z2 ? X3Z + YZ (where X,Y,Z are atoms) is shown to have the following rate behavior: Rate (M/s) [X2] (M) [XY] (M) [Z2] (M)
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
The decomposition of KClO3 proceeds spontaneously when it is heated. Do you think that the reverse reaction, the formation of KClO3 from KCl and O3 is likely to be feasible under ordinary conditions
A mixture of hases contains 0.330 mol CH4, 0.230 mol C2H6 and 0.270 mol C3H8. The total pressure is 1.55 atm. Compute the partial pressures of the gases.
a 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25degc and the volume of the balloon is 12.2 l.
Compare the IR spectra for R and S carvone. Explain all differences. Define what does IR signals show in a molecule
Calculate the distances NH3 gas and HCl gas would travel in this experiment if a 100.0-cm tube were used, based on the accepted molar masses for the two gases
What is the solubility of CaF2 in a solution that has an equilibrium concnetration of 0.01 M EDTA ^ 4- (aq)? Ksp (CaF2) = 3.9 x 10^-11 and Kf for [Ca(EDTA)]2- = 5.0 x 10^10
Indium is a vital component of the electrically conducting transparent coatings on LCD screens. Indium metal can be prepared by electrolysis of salts such as indium (III) chloride.
Predict if the following conditions would result in the formation of a precipitate: (A) 0.0025 M Fe^3+ at pH 6.00 (B) 0.0025M Ba^2+ and a 1.25* 10^-4 M solution of sodium sulfate
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