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.
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5q2k6aKY6L6D5Li6566A5Y2V44CC5qC55o2u6aKY55uu57uZ5Ye655qE6KGo5qC85Y+v5Lul55yL5Ye677yM5q+PNi41ZyBabuWPjeW6lOeUn+aIkDAuMmdIPHN1Yj4yPC9zdWI+44CCPGJyPjwvcD4=
- 提示2：PHA+5Y+N5bqU5Zyo5rCi5rCU55Sf5oiQMC43Z+aXtuWBnOatou+8jOW+iOWuueaYk+eul+WHuuatpOaXtlpu55qE6LSo6YeP44CCPGJyPjwvcD4=
- 答案：Qg==
PHA+6Kej77ya6K+l5Y+N5bqU5Lit55Sf5oiQ55qE5rCi5rCU6YeP55qE5pyA5aSn5YC85pivMC43Z++8jOWBh+iuvuatpOaXtuWPjeW6lOeahFpu55qE6LSo6YeP5Li6eOOAgumUjOS4jueogOehq+mFuOeahOWPjeW6lOaWueeoi+W8j++8mjwvcD48cD4mbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsmbmJzcDsgSDxzdWI+Mjwvc3ViPlNPPHN1Yj40IDwvc3ViPitabuKVkFpuU088c3ViPjQ8L3N1Yj4rSDxzdWI+Mjwvc3ViPuKGkTwvcD48cD7mja7popjmhI/nmoRabuS4jkg8c3ViPjI8L3N1Yj7nmoTmr5TkvovvvJogNi41ZyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7Jm5ic3A7IDAuMmc8YnI+PC9wPjxwPiZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7IHggJm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7ICZuYnNwOyAmbmJzcDsgJm5ic3A7ICZuYnNwOyZuYnNwOyAwLjdnICZuYnNwOzxicj48L3A+PHA+Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7Jm5ic3A7IOW+iOWuueaYk+ino+W+l++8mng9MjIuNzVnPC9wPjxwPjxicj48L3A+PHA+PGJyPjwvcD48cD7pnZLmnpzlhL/lppnop6PvvJrmoLnmja7lm77kuK3nmoRIPHN1Yj4yPC9zdWI+55qE5aKe6YeP5L6/5Y+v5Lul55yL5Ye677yM5Y+N5bqU5ZyoWm7kuLoxOS41Z+aXtuWwmuacquWBnOatou+8jOWcqFpu5Li6MjZn5YmN5bCx5bey57uP5YGc5q2i44CC5Lmf5bCx5piv5YGc5q2i5pe2Wm7nmoTotKjph49t77yaMTkuNWcmbHQ7bSZsdDsyNmcu5oiR5Lus5L6/5Y+v55u05o6l6YCJ5Ye6QuetlOahiOOAgjxicj48L3A+
本课配套习题挑战模式2/5
单选题
难度系数：
2.
过氧化氢溶液长期保存会自然分解，使得溶质质量分数减小。小军从家中拿来一瓶久置的医用过氧化氢溶液，和同学们一起测定溶质质量分数。他们取出该溶液51g，加入适量二氧化锰，生成气的质量与反应时间的关系如图所示。计算该溶液中溶质的质量分数。
| A: 3% |
| B: 2% |
| C: 4% |
| D: 5% |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5L6d5o2u55Sf5oiQ55qE5rCn5rCU6LSo6YeP5YiX5byP5rGC6Kej44CCPC9wPg==
- 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.
| A: 81% |
| B: 8.1% |
| C: 40.5% |
| D: 4.1% |
一次做对，真牛！
+5奖励规则>
- 提示1：IOS+neaNruWPjeW6lOeahE5hT0jnmoTotKjph4/vvIzlj6/ku6XmsYLlvpflj43lupTnlJ/miJDnmoROYTxzdWI+Mjwvc3ViPlNPPHN1Yj40PC9zdWI+5ZKMTWcoT0gpPHN1Yj4yPC9zdWI+55qE6LSo6YeP44CC
- 答案：Qg==
PGltZyB3aWR0aD0zNzcgaGVpZ2h0PTI5NyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzM0LzA0L3JCQUNFMU1TOGg3aEVTYk9BQUFtMkdzakVEUTM2Ny5wbmciPg==
本课配套习题挑战模式4/5
单选题
难度系数：
4.
| A: 128g |
| B: 145g |
| C: 114g |
| D: 163.5g |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+55Sx5Zu+5Y+v55+l77yM5q+P5raI6ICXMjBn55uQ6YW477yM5raI6ICXNWdDYUNPPHN1Yj4zPC9zdWI+77yM5YiZMTAwZ+ebkOmFuOa2iOiAlzI1ZyBDYUNPPHN1Yj4zPC9zdWI+44CCPC9wPg==
- 提示2：PHA+55Sx5Y+N5bqU55qEQ2FDTzxzdWI+Mzwvc3ViPui0qOmHj+WPr+S7peaxguW+l+eUn+aIkOeahENhQ2w8c3ViPjI8L3N1Yj7lkoxDTzxzdWI+Mjwvc3ViPui0qOmHj+OAguagueaNrui0qOmHj+WuiOaBkuWPr+S7peaxguW+l+aJgOW+l0NhQ2w8c3ViPjI8L3N1Yj7murbmtrLnmoTotKjph4/jgII8L3A+
- 提示3：PHA+5rC055qE6LSo6YeP5L6/5Y+v5rGC5Ye644CCPC9wPg==
- 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.
100mL稀盐酸中加入混合均匀的NaHCO3和KHCO3固体粉末，充分反应后使气体全部逸出. 右图是加入粉末的质量与产生CO2（该状况下，气体的密度为1.964g/L）体积的关系. 请计算：（1）该盐酸中HCl的质量. （2）若该盐酸为120mL时，加入粉末为58.5g，求产生CO2的体积. 
| A: （1）18.25g；（2）12.44L |
| B: （1）16.25g；（2）12.44L |
| C: （1）18.25g；（2）13.44L |
| D: （1）16.25g；（2）13.44L |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+55Sx5Zu+56S65Y+v55+l77yM55Sf5oiQ5rCU5L2T55qE5L2T56ev5Li6MTEuMkzvvIzmoLnmja7igJzotKjph4895L2T56evw5flr4bluqbigJ3orqHnrpflh7rnlJ/miJDmsJTkvZPnmoTotKjph4/vvJs8L3A+
- 提示2：PHA+SENs5LiOTmFIQ088c3ViPjM8L3N1Yj7lkoxLSENPPHN1Yj4zPC9zdWI+5Y+N5bqU77yM5q+U5L6L5Z2H5Li6MTox77yM55Sf5oiQ55qEQ088c3ViPjI8L3N1Yj7kuZ/mmK/kuIDku73jgILljbPvvJpIQ2zvvZ5DTzxzdWI+Mjwvc3ViPuOAguaNruatpOWFs+ezu+WPr+S7peaxguWHuuebkOmFuOS4rUhDbOeahOi0qOmHj+OAgjwvcD4=
- 提示3：PHA+55Sx5Zu+56S65Y+v55+l77yM5a6M5YWo5Y+N5bqU5pe25Yqg5YWl57KJ5pyr55qE6LSo6YeP5Li6NDVn77yM5qC55o2u77yIMe+8ieS4reeUn+aIkOawlOS9k+S9k+enr+eahOi0qOmHj+WNs+WPr+iuvuiuoeWHuuatpOaXtuS6p+eUn0NPPHN1Yj4yPC9zdWI+55qE5L2T56ev77ybPC9wPg==
- 答案：Qw==
PHA+6Kej77ya77yIMe+8iW3vvIhDTzxzdWI+Mjwvc3ViPu+8iT0xMS4yw5cxLjk2ND0yMmfvvJs8YnI+6K6+55uQ6YW45LitSENs55qE6LSo6YeP5Li6eC48YnI+PGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzM0LzAyL3JCQUNFMU1TOGZUQU9KV2ZBQUFPYTNSN1FDUTc5Mi5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMzQvMDIvckJBQ0UxTVM4ZlRBT0pXZkFBQU9hM1I3UUNRNzkyLnBuZyIgaGVpZ2h0PSIyMDIiIHdpZHRoPSIyNTQiPjxicj7miJbogIXov5nmoLfnkIbop6PvvIwxMDBtTOaBsOWlveS4jjQ1Z+WbuuS9k+eyieacq+WPjeW6lO+8jOmCo+S5iDEyMG1M5Y+q6IO95LiOPGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzEwL0U1L3JCQUNGRk1TOGZUamhldllBQUFETXg2YnlJRTk4MS5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMTAvRTUvckJBQ0ZGTVM4ZlRqaGV2WUFBQURNeDZieUlFOTgxLnBuZyIgaGVpZ2h0PSI0NCIgd2lkdGg9Ijg3Ij7lm7rkvZPnsonmnKvlj43lupTvvIzmlYU1OC41Z+eyieacq+i/h+mHj++8jDEyMG1M55uQ6YW45a6M5YWo5Y+N5bqU77yM5Y2zVu+8iENPPHN1Yj4yPC9zdWI+77yJPTExLjJMw5cxMjAvMTAwPTEzLjQ0TC48YnI+PC9wPg==
