Chemistry, 18.03.2020 21:26 Carlosanddana123
You are given a sample of limestone, which is mostly CaCO3, to determine the mass percentage of Ca in the rock. You dissolve the limestone in hydrochloric acid, which gives a solution of calcium chloride. Then you precipitate the calcium ion in solution by adding sodium oxalate, Na2C2O4. The precipitate is calcium oxalate, CaC2O4. You find that a sample of limestone weighing 128.3 mg gives 140.2 mg of CaC2O4. What is the mass percentage of calcium in the limestone
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Chemistry, 22.06.2019 12:00, carvajalj2520
Explain what happens at the saturation point when adding salt to water at room temperature.
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Chemistry, 22.06.2019 18:00, meowmeowcow
Find the mass, in grams, of 5.00*10^23 molecules of f2
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Chemistry, 22.06.2019 22:40, lindseyklewis1p56uvi
Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization. a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution. part bcalculate the percent ionization of ha in a 0.010 m solution
Answers: 1
You are given a sample of limestone, which is mostly CaCO3, to determine the mass percentage of Ca i...
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