During a lab activity, students prepared two solutions separately at the same temperature. later they mixed the solutions and the temperature dropped. why? there was no energy input during the chemical reaction. energy was absorbed during the chemical reaction. energy was released during the chemical reaction. the temperature of the surroundings dropped.
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If this sedimentary rock layer is truly the oldest one of marine origin, what do you think that tells usabout the formation of earth's oceans?
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During a lab activity, students prepared two solutions separately at the same temperature. later the...
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