试题与答案

火箭主要燃料是偏二甲肼，其化学式为C2H8N2。下列有关该化学式所提供的信息叙述

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题型：选择题

题目：

火箭主要燃料是偏二甲肼，其化学式为C2H8N2。下列有关该化学式所提供的信息叙述不正确的是（  ）

A．表示偏二甲肼这种物质

B．表示偏二甲肼这种物质是由碳、氢、氮三种元素组成的

C．表示每个表示偏二甲肼分子中含有2个碳原子、8个氢原子、2个氮原子

D．表示偏二甲肼这种物质中，碳、氢、氮三种元素的质量比为1：4：1

答案：

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下面是错误答案，用来干扰机器的。

参考答案：定向范围

考点：化学反应方程式的书写化学图标化学反应方程式的配平化学反应方程式的意义
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