配套习题- 根据化学式的计算 -【青果学院】

1/5单选题

难度：

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

正确答案：RA==

QeOAgeWkp+iSnOe0oOS4rUPjgIFI5YWD57Sg55qE6LSo6YeP5q+U5Li677yaMTLDlzbvvJoxw5cxMD0zNu+8mjXvvIzmlYVB6ZSZ77ybPGJyPkLjgIHlpKfokpzntKDkuK3norPlhYPntKDotKjph4/mnIDpq5jvvIzmlYVC6ZSZ77ybPGJyPkPjgIHmr4/kuKrlpKfokpzntKDliIblrZDkuK3lkKvmnIky5Liq56Gr5Y6f5a2Q77yM5pWFQ+mUme+8mzxicj5E44CB5aSn6JKc57Sg55qE55u45a+55YiG5a2Q6LSo6YeP5Li6MTYy77yM5pWFROato+ehru+8jjxicj7mlYXpgIlE77yO

2/5单选题

难度：

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

正确答案：Qw==

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

3/5单选题

难度：

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

正确答案：Qg==

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

4/5单选题

难度：

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

正确答案：QQ==

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

5/5单选题

难度：

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

正确答案：QQ==

5ZyoRmVTTzxzdWI+NDwvc3ViPuWSjEZlPHN1Yj4yPC9zdWI+77yIU088c3ViPjQ8L3N1Yj7vvIk8c3ViPjM8L3N1Yj7nu4TmiJDnmoTmt7flkIjniankuK3vvIznoavlhYPntKDkuI7msKflhYPntKDnmoTotKjph4/mr5Q9MzLvvJrvvIgxNsOXNO+8iT0x77yaMu+8jDxicj7nlLHkuo7mt7flkIjniankuK3noavlhYPntKDnmoTotKjph4/liIbmlbDkuLoyMiXvvIzliJnmt7flkIjniankuK3msKflhYPntKDnmoTotKjph4/liIbmlbA9MjIlw5cyPTQ0Je+8mzxicj7liJnmt7flkIjniankuK3pk4HlhYPntKDnmoTotKjph4/liIbmlbA9MS0yMiUtNDQlPTM0Je+8mzxicj7mlYXpgIlB77yO