What element is this? how do you know? (page 495 and periodic table pages 500-501)
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Chemistry, 30.10.2019 07:31, evanwall91
What element is this? how do you know? (page 495 and periodic table pages 500-501)
Answers: 2
Chemistry, 23.06.2019 10:30, genyjoannerubiera
4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.
Answers: 2
Chemistry, 24.06.2019 02:00, kappy10
An electric kettle uses electrical energy to boil water. energy from the electricity is transferred to the water, heating it up. an electric ice maker also uses electrical energy, but it freezes water to form ice. since energy can’t be created or destroyed, and water loses potential energy when it freezes to form ice, what happens to the energy put into the ice maker and the energy released by the water?
Answers: 1
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