皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
葡萄糖酸钙片的含量测定：取本品（规格0.5g）20片，精密称定为10.9608g，研细，精密称取片粉1.0664g，置100ml量瓶中，加水约50ml，微热使葡萄糖酸钙溶解，放室温，在用水稀释至刻度，摇匀，用干燥滤纸滤过，弃去初滤液，精密量取续滤液25ml加水75ml。加氢氧化钠试液15ml和钙紫红素指示剂约0.1g，用胺四醋酸二钠滴定液（0.05440mol/L）滴至溶液由紫色变为纯蓝色，消耗胺四醋酸二钠滴定液（0.05440mol/L）10.76ml。每1ml胺四醋酸二钠滴定液（0.05mol/L）相当于22.42mg的C12H22CaO14·H2O。求算本品含葡萄糖酸片的含量。
A.
107.91%
B.
98.30%
C.
104.91%
D.
92.37%
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】––When will you be back, Peter? ––________a couple of days.
A.
On
B.
In
C.
For
D.
By
查看完整题目与答案
【单选题】When the Chinese delegation arrived at Vienna airport, they were received _____ cheers.A．inB．for
A.
32. When the Chinese delegation arrived at Vienna airport, they were received _____ cheers. A．in
B.
for
C.
on
D.
With
查看完整题目与答案
【单选题】治疗脑血管痉挛性疾病宜选用（）。
A.
地高辛
B.
普萘洛尔
C.
维拉帕米
D.
氟桂嗉
查看完整题目与答案
【单选题】By success, I don’t mean ___ usually thought of when that word is used.
A.
what is
B.
that we
C.
as you
D.
all is
查看完整题目与答案
【简答题】Calculate the pH at which an acid indicator with K a =1. 0×10 -5 chan ges color when the indicator is 1.00×10 -3 M.
查看完整题目与答案
【单选题】治疗脑血管痉挛性疾病宜选用
A.
地高辛
B.
普奈洛尔
C.
维拉帕米
D.
硝苯地平
E.
尼莫地平
查看完整题目与答案
【单选题】如图所示 矩形截面,则m~m线以上部分和以下部分对形心抽z的两个静距的( )
A.
绝对值相等，正负号相同
B.
绝对值相等，正负号不同
C.
绝对值不等，正负号相同
D.
绝对值不等，正负号不同
查看完整题目与答案
【单选题】The film fans all ______ when they learned that Jackie Chan and Jet Li would pair up for the first time in the action film．
A.
brought up
B.
turned up
C.
grew up
D.
cheered up
查看完整题目与答案
【单选题】It is a great ________ for a person to be able to drive when he is looking for a job.
A.
benefit
B.
chance
C.
advantage
D.
fortune
查看完整题目与答案
【单选题】下列与负面情绪无关的疾病是: ( )
A.
胃溃疡
B.
癌症
C.
高血压
D.
抑郁症
E.
糖尿病
查看完整题目与答案
相关题目：
【单选题】––When will you be back, Peter? ––________a couple of days.
A.
On
B.
In
C.
For
D.
By
查看完整题目与答案
【单选题】When the Chinese delegation arrived at Vienna airport, they were received _____ cheers.A．inB．for
A.
32. When the Chinese delegation arrived at Vienna airport, they were received _____ cheers. A．in
B.
for
C.
on
D.
With
查看完整题目与答案
【单选题】治疗脑血管痉挛性疾病宜选用（）。
A.
地高辛
B.
普萘洛尔
C.
维拉帕米
D.
氟桂嗉
查看完整题目与答案
【单选题】By success, I don’t mean ___ usually thought of when that word is used.
A.
what is
B.
that we
C.
as you
D.
all is
查看完整题目与答案
【简答题】Calculate the pH at which an acid indicator with K a =1. 0×10 -5 chan ges color when the indicator is 1.00×10 -3 M.
查看完整题目与答案
【单选题】治疗脑血管痉挛性疾病宜选用
A.
地高辛
B.
普奈洛尔
C.
维拉帕米
D.
硝苯地平
E.
尼莫地平
查看完整题目与答案
【单选题】如图所示 矩形截面,则m~m线以上部分和以下部分对形心抽z的两个静距的( )
A.
绝对值相等，正负号相同
B.
绝对值相等，正负号不同
C.
绝对值不等，正负号相同
D.
绝对值不等，正负号不同
查看完整题目与答案
【单选题】The film fans all ______ when they learned that Jackie Chan and Jet Li would pair up for the first time in the action film．
A.
brought up
B.
turned up
C.
grew up
D.
cheered up
查看完整题目与答案
【单选题】It is a great ________ for a person to be able to drive when he is looking for a job.
A.
benefit
B.
chance
C.
advantage
D.
fortune
查看完整题目与答案
【单选题】下列与负面情绪无关的疾病是: ( )
A.
胃溃疡
B.
癌症
C.
高血压
D.
抑郁症
E.
糖尿病
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题