【简答题】Mike和Yang Lin在谈论他们上下班的通勤经历。看视频,然后根据你所学到的内容把下面的英语单词和短语与它们的汉语意思连起来。
【单选题】来週、先生のお宅へ_____________のですが、ご都合はよろしいでしょうか。
【简答题】下述两种情况下滴定突跃的大小关系为( )a : 用0.1 mol• L-1 Ce(SO4)2标准溶液滴定0.1 mol•L-1FeSO4溶液b: 用0.01 mol• L-1 Ce(SO4)2标准溶液滴定0.01 mol•L-1FeSO4溶液A. 无法判断 B. a小于b C. a大于b D. a 等于b
【单选题】用 Ce(SO 4 ) 2 标准溶液滴定 Fe 2+ 时,下列关于两电对电极电位相等的叙述正确的是 ( )
【单选题】当用Ce(SO 4 ) 2 标准溶液滴定Fe 2+ 溶液,滴定至化学计量点时的电位是()
【简答题】将0.167 5 g铁配制成100.00mL FeS04溶液,用0.100 0 mol. L -1 Ce(S04)2标准溶液滴定。铂电极作指示电极,SCE电极作参比电极,当加入20.00 mL Ce(SO4):标准溶液时,电池的电动势是多少?化学计量点的电动势是多少?
【简答题】通过该实验,学习利用( )测定吸收曲线相互重叠的二元混合物 。
【单选题】The column mentioned by Dr. Whittaker ______.
A.
was part of the building close to the World Trade Center
B.
was part of the World Trade Center
C.
was shot through the window and the floor of the World Trade Center
D.
damaged many buildings in the vicin!ty of the World Trade Center
【单选题】当用Ce(SO 4 ) 2 标准溶液滴定Fe 2+ 溶液,滴定至50%的电位是()
【单选题】The column mentioned by Dr. Whittaker______.
A.
was part of the building close to the World Trade Center
B.
was part of the World Trade Center
C.
was shot through the window and the floor of the world Trade Center
D.
damaged many buildings in the vicinity of the World Trade Center