2022 Shanghai Question 16 Single-choice Differentiating 2022_上海卷 (化学) 16.(2分)冰层表面摩擦力小,原因可能是其表面有一层液态水,现有一冰面面积为200m2,液态水厚度为10﹣7m,水的密度为1g•cm﹣3,求液态水分子数( ) A. 6.69×1020B. 1.20×1022C. 6.69×1023D. 1.20×1025 Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →