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问答题
Part III. Reading ComprehensionTask 2 (10 points)Directions: The following is a passage. After reading it, you are required to answer the following questions.This is an interesting place. You come her...
答案：
Books and bags.
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问答题
在100ml水中溶解17.1g蔗糖(C12H22O11),溶液的密度为1.0638g/ml，求蔗糖的物质的量浓度，质量摩尔浓度，物质的量分数。
答案：
解： M 蔗糖＝ 342(g/mol) n 蔗糖 = 17.1/342=0.05(mol) V = (100+17.1)...
