Chemistry, 14.10.2020 16:01 OfficallyRobloxedd
An impure sample of calcium carbonate (CaCO3) contains calcium
sulfate as an impurity. When excess hydrochloric acid was added to
6g of the sample(CaCO3), 1200cm3 of gas (CO2) were produced
(measured at r. t.p.).
Calculate the percentage purity of the calcium carbonate sample.
Answers: 2
Chemistry, 22.06.2019 11:00
Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.
Answers: 2
Chemistry, 22.06.2019 19:00
How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy
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Chemistry, 22.06.2019 20:00
How are the terms group and period used on the periodic table
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An impure sample of calcium carbonate (CaCO3) contains calcium
sulfate as an impurity. When excess...
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