搜题请搜索小程序“爱下问搜题”
问题 填空题

有50mlNaOH溶液，向其中逐渐通入一定量的CO2，随后向溶液中逐渐加入的0.1mol/L盐酸，产生的气体CO2体积（标准状况下）与所加入的盐酸的体积之间的关系如图所示：试分析向溶液中通入气体后，所得的溶液中的溶质是什么？其物质的量之比多少？产生的气体体积（标准状况）是多少？

答案

（1）所得的溶液中的溶质是:Na2CO3  ,  NaHCO3

（2）其物质的量之比是: 1:1

（3）产生的气体体积（标准状况）是: 0.112L

填空题

根据句意，用所给词的适当形式填空。

1. We'd like to come. We look forward to ______ (see) you at the party.

2. Amy invites us ______ (visit) the Palace Museum tomorrow.

3. I often exercise ______ (little) than three times a week.

4. — Oh, look at the sun! 

    — Yes. It's a ______ (sun) day today.

5. Mum often makes Kitty ______ (do) her homework before dinner.

6. A policeman ______ (come) and caught the robbers.

7. There are a lot of ______ (shelf) in our school library.

8. My parents left for Beijing on the ______ (twenty) of March.

9. Be ______ (careful)! You must cross the road ______ (careful).

10. It is cloudy. The radio says it ______ (rain) tomorrow.

查看答案
单项选择题

男，10岁，全身水肿伴排茶色尿1周，血压130/90mmHg，诊断为急性肾炎。该患儿早期应卧床休息，直到（）

A.肉眼血尿消失

B.水肿消退

C.水肿消退，血压正常

D.肉眼血尿消失，水肿消退，血压正常

E.血压正常
查看答案