中学生网络课堂本课配套习题挑战模式2/5
单选题
难度系数：
2.
两种化合物CH4、C2H2中若含有碳元素的质量相同，则含有氢元素的质量比为
| A: 2:1 |
| B: 4:1 |
| C: 4: 3 |
| D: 1:2 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+56Kz55qE6LSo6YeP55u4562J77yM6K6+56Kz6LSo6YeP5Li6bTwvcD4=
- 提示2：PHA+Q0g8c3ViPjQ8L3N1Yj7kuK3vvIzlvZND55qE6LSo6YeP5Li6beaXtu+8jOawoueahOi0qOmHj00oSCk9NMOXbS8xMjsmbmJzcDs8L3A+PHA+QzxzdWI+Mjwvc3ViPkg8c3ViPjI8L3N1Yj7kuK3vvIzlvZND55qE6LSo6YeP5Li6beaYr++8jOawoueahOi0qOmHj00oSCk9MsOXbS8yNOOAgjwvcD4=
- 提示3：PHA+5Lik6ICF55u45q+U77yM5Y2z5Y+v5b6X5Yiw5Lik6ICF5rCi5YWD57Sg55qE6LSo6YeP5q+U44CCPC9wPg==
- 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.
要使CO和CO2含有相同质量的氧元素，CO和CO2的质量比为_______
| A: 14：11 |
| B: 7：11 |
| C: 11：14 |
| D: 11：7 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+4oCc5rCn5YWD57Sg55qE6LSo6YeP55u4562J4oCd5piv6Kej5q2k6aKY55qE5YWz6ZSuPC9wPg==
- 提示2：PHA+6K6+6LSo6YeP5Li6eOeahENP5ZKM6LSo6YeP5Li6eeeahENPPHN1Yj4yPC9zdWI+5omA5ZCr5rCn5YWD57Sg55qE6LSo6YeP55u4562JPC9wPg==
- 答案：QQ==
PHA+6K6+6LSo6YeP5Li6eOeahENP5ZKM6LSo6YeP5Li6eeeahENPPHN1Yj4yPC9zdWI+5omA5ZCr5rCn5YWD57Sg55qE6LSo6YeP55u4562JPGJyPuagueaNruWFrOW8jzflj6/lvpfkuIvliJfnrYnlvI/vvJo8YnI+eMOXPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzEwL0QwL3JCQUNGRk1TN1RqU0VMUnNBQUFCNUVCMGhLQTAyOS5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTAvRDAvckJBQ0ZGTVM3VGpTRUxSc0FBQUI1RUIwaEtBMDI5LnBuZyIgaGVpZ2h0PSIzOCIgd2lkdGg9IjIyIj7DlzEwMCU9ecOXPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzMzL0VCL3JCQUNFMU1TN1RqeGRWYjFBQUFCc2dDaml5UTQ4NC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMzMvRUIvckJBQ0UxTVM3VGp4ZFZiMUFBQUJzZ0NqaXlRNDg0LnBuZyIgaGVpZ2h0PSIzOCIgd2lkdGg9IjIyIj7DlzEwMCU8YnI+eDp5PTE0OjExPGJyPjwvcD48cD48YnI+PC9wPjxwPumdkuaenOWEv+Wmmeino++8mkNP5ZKMQ088c3ViPjI8L3N1Yj7miYDlkKvmsKflhYPntKDnmoTotKjph4/nm7jlkIzvvIzkuZ/lsLHmmK9DPHN1Yj4yPC9zdWI+TzxzdWI+Mjwvc3ViPu+8iDLkuKpDT++8ieS4jkNPPHN1Yj4yPC9zdWI+5omA5ZCr5rCn5Y6f5a2Q5Liq5pWw55u4562J77yM5rCn55qE6LSo6YeP5pWw5Lmf55u4562J44CCPGJyPjwvcD48cD7pgqPkuYjmiJHku6zkvr/lj6/ovbvmnb7lnLDmsYLlh7rvvJpDPHN1Yj4yPC9zdWI+TzxzdWI+Mjwvc3ViPu+8iDLkuKpDT++8ieS4jkNPPHN1Yj4yPC9zdWI+55qE6LSo6YeP5q+U5Li677yaPGJyPjwvcD48cD7vvIgyw5cyOO+8iSA6IDQ0PTE0OjExPGJyPjxicj48L3A+
本课配套习题挑战模式4/5
单选题
难度系数：
4.
质量相等的CO和CO2中，氧元素的质量比为
| A: 11：7 |
| B: 14：7 |
| C: 7：11 |
| D: 16：7 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+562J6LSo6YeP5pe277yM5YiG5a2Q5pWw5LmL5q+U5LiO5LuW5Lus55qE55u45a+55YiG5a2Q6LSo6YeP5LmL5q+U5piv5oiQ5Y+N5q+U55qE44CCPC9wPg==
- 提示2：PHA+5q+P5LiqQ0/liIblrZDnmoTnm7jlr7notKjph4/kuLoyOO+8jOavj+S4qkNPPHN1Yj4yPC9zdWI+5YiG5a2Q55qE55u45a+56LSo6YeP5Li6NDTjgII8L3A+
- 答案：QQ==
PHA+Q0/kuI5DTzxzdWI+Mjwvc3ViPueahOebuOWvueWIhuWtkOi0qOmHj+S5i+avlOS4ujI477yaNDQ9NzoxMe+8jOetiei0qOmHj+aXtu+8jOWIhuWtkOaVsOS5i+avlOS4juS7luS7rOeahOebuOWvueWIhuWtkOi0qOmHj+S5i+avlOaYr+aIkOWPjeavlOeahO+8jOS5n+WwseaYrzExOjfjgILlm6DmraTvvIzmsKflhYPntKDnmoTotKjph4/mr5TkuZ/lsLHmmK8xMTo344CCPGJyPjwvcD48cD48YnI+PC9wPg==
本课配套习题挑战模式5/5
单选题
难度系数：
5.
等质量的CO2和SO2，求分子个数之比，原子总数之比，氧原子质量之比是多少
| A: 16 ：11；16：11；16：11 |
| B: 11：16；16：11；16：11 |
| C: 16 ：11；11：16；16：11 |
| D: 16 ：11；11：16；11：16 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+562J6LSo6YeP5pe277yM5YiG5a2Q5Liq5pWw5q+U5LiO55u45a+55YiG5a2Q6LSo6YeP5q+U5oiQ5Y+N5q+U44CCPGJyPjwvcD4=
- 提示2：PHA+5Y6f5a2Q5Liq5pWw5q+U562J5LqO5YiG5a2Q5pWw5LmY5Lul5q+P5Liq5YiG5a2Q5Lit55qE5Y6f5a2Q5pWw5LmL5q+U44CCPGJyPjwvcD4=
- 提示3：PHA+5Lik56eN5YiG5a2Q5Lit6YO95ZCrMuS4qk/ljp/lrZDvvIzmsKfljp/lrZDmlbDkuYvmr5TnrYnkuo7liIblrZDmlbDkuYvmr5TjgII8L3A+
- 答案：QQ==
PHA+55u45a+55YiG5a2Q6LSo6YeP5q+UPTQ0OjY0PTExOjE2PC9wPjxwPuaJgOS7pe+8jOWIhuWtkOS4quaVsOavlD0xNjoxMTxicj7ljp/lrZDkuKrmlbDmr5Q95YiG5a2Q5pWww5fmr4/liIblrZDlkKvljp/lrZDkuKrmlbDkuYvmr5Q9MTbDlzMg77yaMTHDlzM9MTbvvJoxMTxicj7pg73mmK8y5LiqT+WOn+WtkO+8jOawp+WOn+WtkOS5i+avlD3liIblrZDkuYvmr5Q9MTbvvJoxMTwvcD4=
