Physics, 15.07.2020 22:01 markeishamarsh4
What is the total energy change for the following reaction: 2H2 + O2 -> 2H2O? Given: H-H bond: 436 kJ/mol O-O double bond: 499 kJ/mol H-O bond: 463 kJ/mol
Answers: 3
Physics, 21.06.2019 13:00
You are sitting on the beach and wondering about the properties of mechanical waves. describe them in terms of ocean waves.
Answers: 3
Physics, 21.06.2019 15:50
The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. this simple process iswhich kind of a change? a.a physical changeb. a chemical changec. a nuclear changed. an ionic change
Answers: 1
Physics, 22.06.2019 10:00
(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
Answers: 3
What is the total energy change for the following reaction: 2H2 + O2 -> 2H2O? Given: H-H bond: 43...
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