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【简答题】
化学上常用燃烧法确定有机物的组成。下图装置是用燃烧法确定有机物化学式常用的装置，这种方法是在电炉加热时用纯氧氧化管内样品。根据产物的质量确定有机物的组成。 回答下列问题： （1）A装置中分液漏斗盛放的物质是___________，写出有关反应的化学方程式：___________。 （2）C装置（燃烧管）中CuO的作用是______________________。 （3）写出E装置中所盛放物质的名称___________，它的作用是______________________。 （4）若准确称取1.20g样品（只含C、H、O三种元素中的两种或三种）。经充分燃烧后，E管质量增加1.76g，D管质量增加0.72g，则该有机物的最简式为______________________。
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相关题目：
【单选题】Which of the following is the second step in the process of ethical analysis?
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To identify the stakeholders
C.
To identify the options that you can reasonably take
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【判断题】家庭是一群相互依赖的个体相互作用、相互适应构成一个整体。
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decision regarding the research tools and target group
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A.
The trees in the new forest were in different size.
B.
The insects in the new forest had a different taste.
C.
Tamarins could get used to the new environment.
D.
Above 80% of tamarins survived.
查看完整题目与答案
【判断题】家庭是一群相互依赖的个体相互作用、相互适应构成一个整体。()
A.
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B.
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【单选题】The second step in the three-step process for solving an ethical problem is to _______.
A.
analyze the consequences
B.
analyze the problem
C.
make a decision
D.
analyze the actions
查看完整题目与答案