中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.
下列有关“2CO+O2
2CO2”的质量关系，不正确的是
| A: 若56gCO参加反应，则消耗O2的质量一定是32g |
| B: 若16gO2参加反应，则生成CO2的质量一定是44g |
| C: 若10gCO2生成，则消耗的CO 和O2的质量总和一定是10g |
| D: 若5gCO与2gO2混合点燃，则生成的CO2的质量一定是7g |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Zyo54K554eD55qE5p2h5Lu25LiL77yM5LiA5rCn5YyW56Kz5ZKM5rCn5rCU5Y+N5bqU55Sf5oiQ5LqG5LqM5rCn5YyW56Kz77ybPC9wPg==
- 提示2：PHA+5q+PNTbku73otKjph4/nmoTkuIDmsKfljJbnorPlkowzMuS7vei0qOmHj+eahOawp+awlOWujOWFqOWPjeW6lOiDveeUn+aIkDg45Lu96LSo6YeP55qE5LqM5rCn5YyW56Kz77yOPC9wPg==
- 答案：RA==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.
从2H2+O2
2H2O中获取的信息错误的是
| A: 在反应前后，元素的种类没有变化 |
| B: 在常温下氢气与氧气混合就可以发生反应 |
| C: 4g氢气与32g氧气完全反应，可以生成36g水 |
| D: 在反应前后，氢原子和氧原子的数目都没有改变 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u6LSo6YeP5a6I5oGS5a6a5b6L5ZKM5YyW5a2m5pa556iL5byP55qE5a6e6ZmF5bqU55So77yM5LuO5a6P6KeC6K+05rOV5ZKM5b6u6KeC6K+05rOV5Lik5pa56Z2i5YWl5omL44CCPC9wPg==
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.仅仅根据化学方程式 Na2CO3+2HCl═2NaCl+CO2↑+H2O，不能获得的信息是
| A: 反应进行得非常快 |
| B: 生成的CO2是气态的 |
| C: 反应在常温下可以进行 |
| D: 反应物是Na2CO3和HCl |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5YyW5a2m5pa556iL5byP55qE5ZCr5LmJ5Yik5pat77yM5YyW5a2m5pa556iL5byP55qE5ZCr5LmJ5Li76KaB5pyJ5Lul5LiL5Yeg54K577ya4pGg6KGo56S65Y+N5bqU54mp44CB4pGh6KGo56S655Sf5oiQ54mp44CB4pGi6KGo56S65Y+N5bqU5p2h5Lu244CB4pGj5Y+N5pig5ZCE54mp6LSo6Ze06YeP55qE5YWz57O744CB4pGk5aaC55Sf5oiQ54mp55qE54q25oCB562J77yO
- 答案：QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.化学方程式不能提供的信息是
| A: 哪些物质参加反应 |
| B: 在什么条件下发生反应 |
| C: 各物质之间的质量比 |
| D: 化学反应的快慢 |
一次做对，真牛！
+5奖励规则>
- 提示1：5LuO5YyW5a2m5pa556iL5byP6I635b6X55qE5L+h5oGv5Li76KaB5pyJ77ya5Y+N5bqU54mp44CB55Sf5oiQ54mp44CB5Y+N5bqU5p2h5Lu244CB5ZCE54mp6LSo6Ze06LSo6YeP55qE5YWz57O744CC
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.化学方程式“2H2+O2
2H2O”表示的意义是①氢气和氧气在点燃的条件下反应生成水②氢气、氧气、水三者之间的分子个数之比为2：1：2③4份质量的氢气和32份质量的氧气完全反应生成36份质量的水④氢气加氧气等于水．
2H2O”表示的意义是①氢气和氧气在点燃的条件下反应生成水②氢气、氧气、水三者之间的分子个数之比为2：1：2③4份质量的氢气和32份质量的氧气完全反应生成36份质量的水④氢气加氧气等于水． | A: ①②④ |
| B: ②③④ |
| C: ①③④ |
| D: ①②③ |
一次做对，真牛！
+5奖励规则>
- 提示1：5YyW5a2m5pa556iL5byP6KGo56S655qE5oSP5LmJ5pyJ77ya5Y+N5bqU54mp5ZKM55Sf5oiQ54mp5Y+K5YW25Y+N5bqU5p2h5Lu277yb5Y+N5bqU54mp5ZKM55Sf5oiQ54mp55qE6LSo6YeP5q+U77yb5Y+N5bqU54mp5ZKM55Sf5oiQ54mp55qE5b6u6KeC57KS5a2Q5Liq5pWw5q+U44CC
- 答案：RA==
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
