中学生网络课堂本课配套习题挑战模式1/4
单选题
难度系数：
1.
某化学小组的同学到钢铁厂做社会调查。他们抽取组成相同、质量不同的三份钢的样品（假设钢的样品中只含铁和碳），分别加入100g 19.6%的硫酸进行实验（见下表），充分反应后，用得到的实验数据绘制出下图所示的图像。
试计算稀硫酸完全反应的实验中，反应后所得溶液中溶质的质量分数是多少
| A: 27.4% |
| B: 28.4% |
| C: 29.4% |
| D: 26.4% |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5a6e6aqM5LiA5Lit55qE6ZKi5qC35piv5a6M5YWo5Y+N5bqU55qE77yMNS42OGfpkqLmoLflj43lupTnlJ/miJBIPHN1Yj4yPC9zdWI+MC4yZ+OAgjwvcD48cD7pgqPkuYjlrp7pqozkuInkuK3nlJ/miJDkuoZIPHN1Yj4yIDwvc3ViPjAuNGfvvIznkIborrrkuIrpnIDopoHpkqLmoLcxMS4zNmfjgILogIzlrp7pqozkuInkuK3mnInpkqLmoLcxMi40NmfvvIzljbTlj6rnlJ/miJDkuoYwLjRnSDxzdWI+MiA8L3N1Yj7vvIzor7TmmI7nqIDnoavphbjkuI3lpJ/nlKjkuobvvIzkuZ/lsLHmmK9IPHN1Yj4yPC9zdWI+IFNPPHN1Yj40PC9zdWI+5Y+N5bqU5a6M5YWo44CCPC9wPg==
- 提示2：PHA+6K6+5Y+N5bqU55Sf5oiQRmVTTzxzdWI+NCA8L3N1Yj7nmoTotKjph4/kuLp577yb5raI6ICX6ZOB55qE6LSo6YeP5Li6ejxicj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMzUvOEEvckJBQ0UxTVQ0djdobnlYa0FBQUgzRGFrb2lRMzU1LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zNS84QS9yQkFDRTFNVDR2N2hueVhrQUFBSDNEYWtvaVEzNTUucG5nIiBoZWlnaHQ9IjEwNSIgd2lkdGg9IjE4MyI+PC9wPg==
- 提示3：PHA+5omA5b6X5rq25ray5Lit5rq26LSo55qE6LSo6YeP5YiG5pWw5Li677yaPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzEyLzY4L3JCQUNGRk1UNHY3QWxXYWpBQUFEZzBSVDZoSTAyMC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTIvNjgvckJBQ0ZGTVQ0djdBbFdhakFBQURnMFJUNmhJMDIwLnBuZyIgaGVpZ2h0PSI0MSIgd2lkdGg9IjEyMSI+w5cxMDAlID0gMjcuNCU8L3A+
- 答案：QQ==
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
本课配套习题挑战模式2/4
单选题
难度系数：
2.
某化学小组的同学到钢铁厂做社会调查。他们抽取组成相同、质量不同的三份钢的样品（假设钢的样品中只含铁和碳），分别加入100g 19.6%的硫酸进行实验（见下表），充分反应后，用得到的实验数据绘制出右下图所示的图像。
试计算在稀硫酸完全反应的实验中，反应后所得溶液中溶质的质量分数是多少
| A: 27.4% |
| B: 28.4% |
| C: 29.4% |
| D: 26.4% |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5a6e6aqM5LiA5Lit55qE6ZKi5qC35piv5a6M5YWo5Y+N5bqU55qE77yMNS42OGfpkqLmoLflj43lupTnlJ/miJBIPHN1Yj4yPC9zdWI+MC4yZ+OAgjxicj48L3A+PHA+6YKj5LmI5a6e6aqM5LiJ5Lit55Sf5oiQ5LqGSDxzdWI+MiA8L3N1Yj4wLjRn77yM55CG6K665LiK6ZyA6KaB6ZKi5qC3MTEuMzZn44CC6ICM5a6e6aqM5LiJ5Lit5pyJ6ZKi5qC3MTIuNDZn77yM5Y205Y+q55Sf5oiQ5LqGMC40Z0g8c3ViPjIgPC9zdWI+77yM6K+05piO56iA56Gr6YW45LiN5aSf55So5LqG77yM5Lmf5bCx5pivSDxzdWI+Mjwvc3ViPiBTTzxzdWI+NDwvc3ViPuWPjeW6lOWujOWFqOOAgjxicj48L3A+
- 提示2：PHA+5qC55o2u55Sf5oiQ5rCi5rCU55qE6LSo6YeP77yM5Y+v5Lul5rGC5Ye65Y+C5Yqg5Y+N5bqU55qERmXlkoznlJ/miJDnmoRGZVNPPHN1Yj40IDwvc3ViPueahOi0qOmHj+OAgjxicj48YnI+PC9wPg==
- 提示3：PHA+4oCc5pa556iL5byP5Lit5om+5rq26LSo77yM5Yqg5Yqg5YeP5YeP5om+5rq25ray44CC4oCdPC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式3/4
单选题
难度系数：
3.
计算恰好完全反应后所得溶液中溶质的质量分数(烧杯质量为25.4克)
某化学兴趣小组的同学对一批铁样品(含有杂质，杂质不溶于水,也不与稀硫酸反应)进行分析，甲、乙、丙三位同学分别进行实验，其中只有一位同学所用的稀硫酸与铁样品恰好完全反应。实验数据如下表:
| 物质 | 甲 | 乙 | 丙 |
| 烧杯+稀硫酸 | 200g | 150g | 150g |
| 加入的铁样品 | 9g | 9g | 14g |
| 充分反应后，烧杯+剩余物 | 208.7g | 158.7g | 163.7g |
| A: 17.2% |
| B: 16.2% |
| C: 15.2% |
| D: 14.2% |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5oCd6ICD5a6e6aqM55qE5rWB56iL77yM54On5p2vK+eogOehq+mFuCvliqDlhaXnmoTpk4HmoLflk4EmbmJzcDsgLSZuYnNwOyAo54On5p2vK+WJqeS9meeJqSkmbmJzcDsgPSZuYnNwOyDnlJ/miJDmsKLmsJTnmoTotKjph4/jgILlj6/ku6XorqHnrpflh7rvvIzkuInkuKrlrp7pqozkuK3nlJ/miJDmsKLmsJTnmoTotKjph4/lnYfkuLowLjNn44CCPC9wPg==
- 提示2：PHA+5YiG5p6Q6KGo5qC877yM55Sy5ZCM5a2m55qE56Gr6YW46LSo6YeP5q+U5LmZ5aSa77yM5LiZ5ZCM5a2m55qERmXnmoTotKjph4/mr5TkuZnlpJrvvIzkuInogIXkuqfnlJ/nmoTmsKLmsJTotKjph4/nm7jlkIzjgILlubbkuJTpopjlubLkuK3or7TigJzlhbbkuK3lj6rmnInkuIDkvY3lkIzlrabmiYDnlKjnmoTnqIDnoavphbjkuI7pk4HmoLflk4HmgbDlpb3lrozlhajlj43lupTigJ3vvIzmiJHku6zlj6/ku6XmjqjmtYvlh7rkuZnlkIzlrabnmoTlrp7pqozmmK/mgbDlpb3lrozlhajlj43lupTnmoTjgII8L3A+
- 提示3：PHA+5qC55o2u5Y+N5bqU5pa556iL5byP5ZKM5LmZ5ZCM5a2m55qE5pWw5o2u77yM5Y+v5Lul566A5Y2V566X5Ye6562U5qGI44CCPC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式4/4
单选题
难度系数：
4.某同学将黄铜屑（由铜和锌形成的合金）取样8.0g，与8.0mL密度为1.17g/mL的稀硫酸反应完全，剩余固体的质量为6.7g，则该同学最后所得溶液中溶质的质量分数为
| A: 40.4%. |
| B: 30.3% |
| C: 50.5%. |
| D: 60.6%. |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWunumqjOS4rUg8c3ViPjI8L3N1Yj5TTzxzdWI+NDwvc3ViPuWujOWFqOWPjeW6lOW9ouaIkFpuU088c3ViPjQ8L3N1Yj7murbmtrLjgILnlLHmtojogJfph5HlsZ5abueahOi0qOmHj++8jOagueaNruWPjeW6lOeahOWMluWtpuaWueeoi+W8j+WPr+S7peiuoeeul+eUn+aIkFpuU088c3ViPjQ8L3N1Yj7nmoTotKjph4/jgII=
- 提示2：IOaWueeoi+W8j+S4reaJvua6tui0qO+8jOWKoOWKoOWHj+WHj+aJvua6tuWJguOAgg==
- 答案：Qg==
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
