【Daily Question】Chemical Analysis Version, 2019.9.13
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This post was last edited by zjp on 2019-9-13 08:21. Happy Mid-Autumn Festival! Multiple-choice question: In the laboratory, in order to reduce the evaporation of the mercury surface, a liquid can be placed on top of it; which option provides the best effect? A. 5% NaS•9H2O solution B. Water C. Glycerin C
To reduce the evaporation of the mercury surface in the laboratory, a liquid can be placed on top of it; the most effective option is (C). A. 5% NaS•9H2O solution B. Water C. Glycerin