Chemistry, 29.06.2019 00:40 natlovesfood
Hydrazine (n2h4), a rocket fuel , reacts with oxygen to form nitrogen gas and water vapor. the reaction is represented with the equation: n2h4(l) + o2(g) β n2(g) + 2h2o(g) at stp, if 4.20l of o2 reacts with n2h4, how many liters of water vapor will be produced? a) 2.10l h2o(g) b) 2.67l h2o(g) c) 5.33l h2o(g) d) 8.40l h2o(g)
Answers: 3
Chemistry, 23.06.2019 02:00
Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.
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Chemistry, 23.06.2019 05:00
Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature
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Chemistry, 23.06.2019 07:00
Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.
Answers: 2
Chemistry, 23.06.2019 10:30
Amethod of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called
Answers: 2
Hydrazine (n2h4), a rocket fuel , reacts with oxygen to form nitrogen gas and water vapor. the react...
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