Monday, February 23, 2015

Message to author * Message text: * From: How much is 3 + 6:


In the hands of someone who steals or does not return borrowed books, the book should turn into a predatory snake. She should paralyze and cripple all his limbs. gc With a loud scream should beg for mercy, and let not alleviate suffering, until you reach the decomposition. In his guts let them gnaw bookworm worm death that never dies. And when it arrives the last sentence, let him devour hellfire forever.
Tomorrow we write in chemistry, and so those at the last moment I will explain. I'm not sure if we write from redox reactions, but it hurts when you know how. This "tutoring" on four articles: Redox reactions, steel production, gc electrolysis and galvanic gc cell. Redox reactions have to invent and the rest is just napapouškovat. Redox reactions: a) = O xidace process which increases the oxidation number of the example, the reaction of zinc and hydrochloric acid. Zn + 2HCl arrow ZnCl 2 + H 2 Zn has first ox. No. (= the oxidation number) gc zero because zinc atom itself is neutral. But when combined gc with its Cl ox. no. increases - thus oxidize. b) Reduction = process which reduces the oxidation number of the example, the reaction of zinc and hydrochloric acid. Zn + 2HCl arrow ZnCl 2 + H 2 = oxidizer agent that reduces other substances, but it itself is oxidized reducing agent = substance which reduces other substances, but it itself is oxidized
Message to author * Message text: * From: How much is 3 + 6:


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