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Acteylene gas (C2H2) can be produced by the reaction of calcium carbide and water CaC2 (s) + 2H2O----> C2H2 (g) + Ca(OH)2 (aq) How many liters of C2H2 at 742 mmHg and 26 degrees C can be produced from 2.54 g CaC2 (s)?
A voltic cell with an aqueous electrolyte is based on the reaction between Cd2+ (qu) and Mg(s), producing Cd (s) and Mg2+. Write a balanced cell reaction.
calcium and the human body normally contains 6 quarts of blood, what mass of calcium (in grams) will be found in the total blood volume?
a 260-rm ml flask contains pure helium at a pressure of 759 rm torr. a second flask with a volume of 470 rm ml contains
What is the internal energy change for the gas? Give your answer in joules (J), accurate to three significant figures.
The mercury in a 0.7325 gram unknown sample was precipitated with excess par aperiodic acid, H6IO5, according to the following balanced chemical equation:
The leaves of a Rhubarb contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pKa1=1.23 and pKa2=4.19, what is the pH of a .0282 M solution of oxalic acid
At a certain temperature, the solubility of potassium iodate, KIO3, is 41.1 g/L. Calculate its solubility product constant for this temperature.
the addition of aqueous ammonia to the cathode compartment of the cell described below reduces the cell potential.
When 12.0 mL of a 2.89E-4 M barium acetate solution is combined with 18.0 mL of a 5.24E-4 M sodium carbonate solution does a precipitate form
A sample of CaCO3 with a mass of 4.74 g is placed in 500.0 mL of 0.63M HCl, forming CaCl2, H2O, and CO2. What mass in grams of CO2 is produced
What is the volume in mL of 0.664 M HCl(aq) needed to neutralize the hydroxide ions present in 32.2 mL of 0.851 M NaOH(aq).
Calculate the concentrations of all species in a 0.530 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
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