未分类题
相同质量的葡萄糖和甘油分别溶于100g水中,试比较所得溶液的凝固点、沸点和渗透压。
【参考答案】
两者均为非电解质,葡萄糖(C
6
H
12
O
6
)的摩尔质量大......
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浓度均为0.01 mol·kg-1的蔗糖、HAc、NaC1、BaCl2的水溶液的凝固点哪一个最高?哪一个最低?
A.01
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听力原文:W: Id rather not talk about it. Just dont ask. M: Come on. I think you need to let off some steam. Q: What does the man advise the woman to do?1.A.Speak to her previous employer.B.Get a job working on campus.C.Attend Career Service's workshop.D.Get a job application from him.
A.A.Speak
B.
B.Get
C.
C.Attend
D.
D.Get
E.
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