Chemistry, 23.10.2020 23:20 Petlover6975
Look at the four chemical reactions.
Reaction 1: 4Na + O2 → 2Na2O
Reaction 2: 2NaCl → 2Na + Cl2
Reaction 3: CaCO3 → CaO + CO2
Reaction 4: 2KClO33 → 2KCl + 3O2
Which statement identifies the reaction that is different from the rest and explains correctly why it is different?
Reaction 2, because two ions are interchanged
Reaction 2, because two products are formed
Reaction 1, because a single product is formed
Reaction 1, because a single ion is replaced in a compound
Answers: 1
Chemistry, 22.06.2019 04:40, khan2491
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)
Answers: 2
Chemistry, 22.06.2019 14:30, amylumey2005
How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.
Answers: 2
Look at the four chemical reactions.
Reaction 1: 4Na + O2 → 2Na2O
Reaction 2: 2NaCl → 2Na + C...
Reaction 2: 2NaCl → 2Na + C...
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