Gasoline is a mixture composed primarily of hydrocarbons such as isooctane, which is also known as 2,2,4-trimethylpentane.
gasoline is assigned a number called an octane rating. gasoline with an octane rating of 87 performs the same as a mixture that consists of 87% isooctane and 13% heptane.
an alternative fuel, e-85, can be used in some automobiles. this fuel is a mixture of 85% ethanol and 15% gasoline.
state the octane rating of a gasoline sample that performs the same as a mixture consisting of 92% isooctane and 8% heptane.
identify the functional group in a molecule of ethanol in the alternative fuel e-85.
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Chemistry, 22.06.2019 07:00
This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.
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Chemistry, 22.06.2019 10:30
Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2
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Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 22.06.2019 22:30
You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.
Answers: 3
Gasoline is a mixture composed primarily of hydrocarbons such as isooctane, which is also known as 2...
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