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Chemistry, 22.06.2019 21:00
One similarity and one difference between an element and a mixture of elements
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The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils
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The primary products of complete combustion of fossil fuels are a. carbon dioxide and water b. methane and water c. carbon monoxide and water d. carbon dioxide and carbon monoxide
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Chemistry, 23.06.2019 03:00
Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.
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