Chemistry, 09.07.2021 20:50 please1133
Calculate the mass percent of KCl in a 0.35 m solution of KCl in water. Assume that the density of water is 1.00 g/mL.
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How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer
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The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true
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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
Calculate the mass percent of KCl in a 0.35 m solution of KCl in water. Assume that the density of w...
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