Chemistry, 26.01.2020 06:31 smilingntn33p7pqpp
Gallium has a weighted average atomic mass of 69.7 and two naturally occurring isotopes: gallium-69 and gallium-71. gallium-69 has a relative abundance of 60.1% and a mass of 68.9. the relative abundance of gallium-71 is 39.9%. based on this information, what is the mass of gallium-71?
71.1 g/mol
71.0 g/mol
70.9 g/mol
70.8 g/mol
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 15:30
Light waves can move through , but they travel fastest when they move through a(n) .
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Chemistry, 22.06.2019 15:30
Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn
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Gallium has a weighted average atomic mass of 69.7 and two naturally occurring isotopes: gallium-69...
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