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.将大蒜切成片，露置于空气中15分钟后会产生大蒜素（C6H10S2O），是抗癌之王．大蒜本身不含大蒜素，只有在空气中氧化后才能获得大蒜素．下列说法正确的是
| A: 大蒜素中C、H元素的质量比为6：10 |
| B: 大蒜素中氢元素的含量最高 |
| C: 大蒜素中含有2个硫原子 |
| D: 大蒜素的相对分子质量为162 |
一次做对，真牛！
+5奖励规则>
- 提示1：5YWD57Sg55qE6LSo6YeP5q+U562J5LqO5YWD57Sg4oCc55u45a+55Y6f5a2Q6LSo6YePw5fljp/lrZDkuKrmlbDigJ3kuYvmr5Q=
- 提示2：5rOo5oSP6YCJ6aG555qE6KGo6L+w77yM5Y+q6IO96KGo6L+w5Li6MeS4quWkp+iSnOe0oOS4reWQq+aciTLkuKrnoavljp/lrZDjgII=
- 答案：RA==
QeOAgeWkp+iSnOe0oOS4rUPjgIFI5YWD57Sg55qE6LSo6YeP5q+U5Li677yaMTLDlzbvvJoxw5cxMD0zNu+8mjXvvIzmlYVB6ZSZ77ybPGJyPkLjgIHlpKfokpzntKDkuK3norPlhYPntKDotKjph4/mnIDpq5jvvIzmlYVC6ZSZ77ybPGJyPkPjgIHmr4/kuKrlpKfokpzntKDliIblrZDkuK3lkKvmnIky5Liq56Gr5Y6f5a2Q77yM5pWFQ+mUme+8mzxicj5E44CB5aSn6JKc57Sg55qE55u45a+55YiG5a2Q6LSo6YeP5Li6MTYy77yM5pWFROato+ehru+8jjxicj7mlYXpgIlE77yO
本课配套习题挑战模式2/5
单选题
难度系数：
2.有关治疗H7N9禽流感的新药帕拉米韦（C15H28N4O4）的下列说法，正确的是
| A: 帕拉米韦中含有15个碳原子 |
| B: 帕拉米韦的相对分子质量为328g |
| C: 帕拉米韦是由C、H、N、O四种元素组成 |
| D: 帕拉米韦分子中C、H、N、O的元素质量比为15：28：4：4 |
一次做对，真牛！
+5奖励规则>
- 提示1：5rOo5oSP6YCJ6aG555qE6KGo6L+w77yM5LiN6IO96KGo6L+w5Li65p+Q54mp6LSo5ZCr5pyJ5aSa5bCR5Liq5Y6f5a2Q44CC
- 提示2：5YWD57Sg55qE6LSo6YeP5q+U562J5LqO5YWD57Sg4oCc55u45a+55Y6f5a2Q6LSo6YePw5fljp/lrZDkuKrmlbDigJ3kuYvmr5Q=
- 答案：Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.C14H12O3具有抗癌性能，可抑制癌细胞的增生．下列有关的说法正确的是
| A: 相对分子质量为216 |
| B: 是由碳、氢、氧三种元素组成 |
| C: 是由14个碳原子、12个氢原子3个氧原子构成 |
| D: 该物质中碳、氢、氧三种元素的质量比是14：12：3 |
一次做对，真牛！
+5奖励规则>
- 提示1：55u45a+55YiG5a2Q6LSo6YeP562J5LqO5ZCE5Y6f5a2Q55u45a+55Y6f5a2Q6LSo6YeP5LmL5ZKM44CC
- 提示2：5YWD57Sg55qE6LSo6YeP5q+U562J5LqO5YWD57Sg4oCc55u45a+55Y6f5a2Q6LSo6YePw5fljp/lrZDkuKrmlbDigJ3kuYvmr5Q=
- 答案：Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.某不纯的NH4NO3样品中，经分析样品中N%=38%，则混合物中混有下列杂质中
| A: CO（NH2）2 |
| B: NH4Cl |
| C: （NH4）2SO4 |
| D: NH4HCO3 |
一次做对，真牛！
+5奖励规则>
- 提示1：5pys6aKY6KaB5YWI5rGC5Ye656Gd6YW46ZO15Lit5rCu5YWD57Sg55qE6LSo6YeP5YiG5pWw77yM6Iul5aSn5LqOMzgl77yM6K+05piO5p2C6LSo5Lit5rCu5YWD57Sg55qE6LSo6YeP5YiG5pWw5bCP5LqOMzgl77yb6Iul5bCP5LqOMzgl77yM6K+05piO5p2C6LSo5Lit5rCu5YWD57Sg55qE6LSo6YeP5YiG5pWw5aSn5LqOMzgl44CC
- 提示2：54S25ZCO5YaN5qC55o2u5omA5YiG5p6Q55qE57uT5p6c77yM5YiG5Yir6K6h566X5Zub5Liq6YCJ6aG55Lit5rCu5YWD57Sg55qE6LSo6YeP5YiG5pWw5Y2z5Y+v44CC
- 答案：QQ==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.在FeSO4和Fe2（SO4）3组成的混合物中，硫元素的质量分数为22%则混合物中铁元素的质量分数为
| A: 34% |
| B: 44% |
| C: 66% |
| D: 无法确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Lik56eN54mp6LSo5Lit55qEU+S4jk/nmoTkuKrmlbDmr5TlnYfkuLoxOjTvvIzlm6DmraTlj6/ku6XmoLnmja7noavlhYPntKDnmoTotKjph4/liIbmlbDmsYLlh7rmsKflhYPntKDnmoTotKjph4/liIbmlbDjgII=
- 提示2：6ZOB5YWD57Sg55qE6LSo6YeP5YiG5pWwPTEt56Gr5YWD57Sg55qE6LSo6YeP5YiG5pWwLeawp+WFg+e0oOeahOi0qOmHj+WIhuaVsOOAgg==
- 答案：QQ==
5ZyoRmVTTzxzdWI+NDwvc3ViPuWSjEZlPHN1Yj4yPC9zdWI+77yIU088c3ViPjQ8L3N1Yj7vvIk8c3ViPjM8L3N1Yj7nu4TmiJDnmoTmt7flkIjniankuK3vvIznoavlhYPntKDkuI7msKflhYPntKDnmoTotKjph4/mr5Q9MzLvvJrvvIgxNsOXNO+8iT0x77yaMu+8jDxicj7nlLHkuo7mt7flkIjniankuK3noavlhYPntKDnmoTotKjph4/liIbmlbDkuLoyMiXvvIzliJnmt7flkIjniankuK3msKflhYPntKDnmoTotKjph4/liIbmlbA9MjIlw5cyPTQ0Je+8mzxicj7liJnmt7flkIjniankuK3pk4HlhYPntKDnmoTotKjph4/liIbmlbA9MS0yMiUtNDQlPTM0Je+8mzxicj7mlYXpgIlB77yO
