Chemistry, 12.12.2019 06:31 haileysolis5
The substance hydrogen has the following properties: normal melting point: 14.0 k normal boiling point: 20.3 k triple point: 7.1×10-2 atm, 13.9 k critical point: 12.8 atm, 33.2 k at temperatures above 33.2 k and pressures above 12.8 atm, h2 is a . h2 does not exist as a liquid at pressures below atm. h2 is a at 4.84 atm and -0.2 k. h2 is a at 1.00 atm and 15.6 k. h2 is a at 7.10×10-2 atm and 34.4 k. which of the following are true?
choose all that apply
the final state of the substance is a gas.
the sample is initially a solid.
the gas initially present will solidify.
the final state of the substance is a solid.
no phase change will occur
Answers: 3
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 11:00
What is the molar mass of a gas that has density of 2.054 g/l
Answers: 2
Chemistry, 22.06.2019 14:20
You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring
Answers: 1
The substance hydrogen has the following properties: normal melting point: 14.0 k normal boiling p...
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