Chemistry, 22.07.2019 05:00 alizpleyer
Which layer of the atmosphere contains the ozone layer that blocks most of the harmful ultraviolet radiation from the sun? a. stratosphere b. troposphere c. thermosphere d. mesosphere
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Chemistry, 21.06.2019 18:10
Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.
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Chemistry, 22.06.2019 19:00
How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next
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Chemistry, 23.06.2019 00:30
•hydration •dissociation •dissolving which one goes to which
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Which layer of the atmosphere contains the ozone layer that blocks most of the harmful ultraviolet r...
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