皮皮学，免费搜题
登录
搜题
【单选题】
硫代硫酸钠溶液与稀硫酸反应的化学方程式为Na 2 S 2 O 3 +H 2 SO 4 =Na 2 SO 4 +SO 2 ↑+S↓+H 2 O,下列各组实验中最先出现浑浊的是 ( ) 实验 反应温度 /°C Na 2 S 2 O 3 溶液 稀 H 2 SO 4 H 2 O V/mL c/mol·L - 1 V/mL c/mol·L - 1 V/mL A 25 5 0.1 10 0.1 5 B 25 5 0.2 5 0.2 10 C 35 5 0.1 10 0.1 5 D 35 5 0.2 5 0.2 10A.
B.
C.
D.
D
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】John Brown wrote this essay. →
【简答题】Mr. Brown wrote the words down on _________.
【简答题】John Brown wrote this essay. 改为: wrote this essay?
【单选题】The US biodefence research is particularly controversial because of the sheer ______ of the effort.
A.
latitude
B.
magnitude
C.
aptitude
D.
attitude
【简答题】In the text Got My B.A, by Sheer Luck, the author thought he got one chance in a million because
【单选题】The ordinary family in colonial North America was primarily concerned with sheer physical survival and beyond that, is own economic prosperity. Thus, children were valued in terms of their productivit...
A.
The Place of Children in United States Society
B.
The Children of Colonial North American
C.
The Development of Cultural Values
D.
The Child as a Utilitarian Organism
【单选题】I am _____, I am an English boy. [ ]
A.
John Brown
B.
Brown John
C.
Gina Green
D.
Green Gina
【简答题】John Brown wrote this essay. → wrote this essay?
【简答题】John Brown wrote this essay. 改为: ?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
