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Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite. Assuming a 70.% yield in the overall reaction, what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 7.2 104 kg of coal that is 0.33 mass % sulfur?
The pH of uncontaminated rain water is about 5.6. The pH of rain falling in Cleveland, OH is 4.2 and that in Omaha, NE is 5.5. What is the concentration of hydrogen ions in the rainfall of each city? [H] 6.3 ^ -5 for Cleveland.
Titanium crystallizes on a body-centered cubic lattice with a unit cell edge length of 3.28 Å. The density of titanium is 4.54 g /?cm3. The atomic mass of titanium is 47.88.
Bismuth oxide reacts with carbon to form bismuth metal: Bi2O3(s) + 3C(s) --> 2Bi(s) + 3CO(g)
A system absorbs 295 kJ of heat and the surroundings do 177 kJ of work on the system. What is the change in internal energy of the system?
We find that 61.1 mL of an HCl solutionreacts exactly with 74.2 mL of 1.371 M KOH solution. Calculate the molarity of the HCl solution.
Determine the percent yield of barium sulfate If the actual yield = 0.456 grams?
A nucleus of mass number 27 contains 14 neutrons. An atomic ion of this element has 10 electrons in it. Write the symbol for this atomic ion
a 26.0 ml sample of a liquid was found to have a mass of 13.0g. what is the density of the liquid?
An auto mechanic spills 90. mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.5 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid
A student has sample of HNO3 of 340 ml at 25 degrees celsius and add water of 110 ml at 95 degrees celsius then determine the final temperature of the mixture
Which corresponds to approximately 2.65 * 104 mol of electrons at the voltage of a fuel cell and calculate how much heat energy is absorbed?
pH = log[H3O+] , pH + pOH = 14, [H3O+] * [OH-] = 1.0 X 10^-14, pH = -log(0.001) = 3 Could you show me a few of the steps between line one and two in both of these conclusions?
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