Chemistry, 31.08.2019 04:10 isabella4141
How to draw hess' cycle for this question ?
carbon, hydrogen and ethane each burn exothermically in an excess of air. c(s) + o2(g) → co2(g) ahⓡ =-393.7 kj mol: 1. h2(g) + % o2(g) → h2o(1) ah® --285.9 kj mol. c2h4(g) + 302(g) → 2co2(g) + 2h2o(1) ah® --1411.0 kj mol? . use the data to calculate the standard enthalpy change of formation, ah® in kj mol? , of ethene at 298 k 2c(s) + 2h2(g) → c2h4(8)
Answers: 1
Chemistry, 22.06.2019 06:00
This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light
Answers: 2
Chemistry, 22.06.2019 15:30
The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
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Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Chemistry, 22.06.2019 17:00
The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.
Answers: 1
How to draw hess' cycle for this question ?
carbon, hydrogen and ethane each burn exothermica...
carbon, hydrogen and ethane each burn exothermica...
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