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If a physical or chemical change gives off heat energy, it is (4 points) an endothermic process a chemical process an exothermic process an energetic process
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Chemistry, 23.06.2019 00:30
You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices
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Chemistry, 23.06.2019 01:00
If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms
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Chemistry, 23.06.2019 03:00
Is it safe to take 450mg of diphenhydramine hydrochloride?
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If a physical or chemical change gives off heat energy, it is (4 points) an endothermic process a ch...
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