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Chemistry, 21.06.2019 13:00
Identify the balanced chemical equation that represents a decomposition reaction. p4 + 3o2 โถ p2o3 2fe(oh)3 โถ 2feo3 + h2o cuso4 โถ cuo + 2so3 2fe(oh)3 โถ fe2o3 + 3h2o
Answers: 1
Chemistry, 22.06.2019 08:00
Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.
Answers: 2
Chemistry, 22.06.2019 08:30
Which part of earthโs surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains
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Las diferencias fundamentales del entramado urbano antes y despues de 1750...
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