皮皮学，免费搜题
登录
搜题
【单选题】
取苯巴比妥0.4045g，加入新制的碳酸钠试液16ml使溶解，加丙酮12ml与水90ml，用硝酸银滴定液(0.1025mol/L)滴定至终点，消耗硝酸银滴定液16.88ml，则苯B比妥的百分含量(每ml的硝酸银滴定液0.1mol/L相当于23.22mg的苯巴比妥)A.
0.984
B.
0.968
C.
0.969
D.
0.993
E.
0.999
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】SWOT analysis helps a company to develop a full awareness of all the favorable factors involved in a decision.
A.
正确
B.
错误
【简答题】听短文，选择正确答案。短文读两遍。 1. Today in class the teacher will tell the students ____. A. something about Mount Tai B. something about the Great Wall C. something about the Summer Palace 2. The Great Wall is ab...
【单选题】若函数 在其定义域内是增函数,则下列不等式一定成立的是( )
A.
k>0
【简答题】The first step ofpreparatory work of writing a critical ysis of a film is to develop a ____________ that
your essay will explain and support.
【单选题】The way to develop the text:
A.
Phenomenon-Cause-Effect
B.
Phenomenon-Analysis-Suggestion
【单选题】(Unit1TextB课文段落)10. Other students sometimes picked on the troubled boy. For the past few months, Weise had been tutored at home. He was depressed and being treated for suicidal tendencies. Doctors ha...
A.
表扬
B.
羡慕
C.
捉弄
D.
挑选
【单选题】(Unit1TextB课文段落) 10. Other students sometimes picked on the troubled boy. For the past few months, Weise had been tutored at home. He was depressed and being treated for suicidal tendencies. Doctors h...
A.
because he was a slow learner.
B.
because he was a fast leaner.
C.
because he was a troubled boy.
D.
because he was a naughty boy.
【多选题】Today...
A.
7. more young people than ever go to university.
B.
8. most students fail to complete their studies.
C.
9. international students are more interested in lifestyle than quality of courses.
D.
10. students need their parents for financial help.
E.
11. students don't contact their parents as often as they used to.
F.
12. students don't enjoy university life as much as they used to.
相关题目：
【单选题】若函数 在其定义域内是增函数,则下列不等式一定成立的是( )
A.
k>0