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A solid substance is heated until it changes state into a liquid and allowed to cool. The diagram shows the cooling curve for this substance. At what part of the curve is the substance freezing?
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In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?
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Match each statement with the state of matter it describes
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A solid substance is heated until it changes state into a liquid and allowed to cool. The diagram sh...
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