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问题 填空题

(4分)将下列物质进行分类（填序号）

① O2与O3    ②126C与136C    ③金刚石与石墨     ④冰与水    ⑤ H2、D2、T2

⑥ 和

（1）互为同位素的是                （2）互为同素异形体的是              

（3）互为同分异构体的是            （4）属于同一化合物的是              

答案

②，①③，⑥，④

问答题

Hugo had been a lawyer in practice before he joined Property Limited as a director of the company five years ago. The business of the company is about property investments.Last month, Hugo signed a document of the company without reading it. The document was in fact a contract and related to the selling of an asset of the company to another contracting party.By reason of a typing mistake, the selling price of the asset was wrongly stated in the contract as $2,000,000 when the correct price should be $3,000,000. The company has suffered loss as a result.Required:In relation to company law, advise Hugo as to whether he is liable for the loss suffered by the company. (10 marks)
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填空题

（I）图（1）是 A、B、C三种固体物质的溶解度曲线．

请回答：

（1）t1℃时，A、B、C三种物质的溶解度由大到小的顺序是______；

（2）当温度从t2℃降到t1℃时，三物质的饱和溶液中没有晶体析出的是______．

（II）用图（2）中的装置可进行气体和固体的反应．

（1）请在下表中写出两组不同的反应物（两组气体必须各不相同）．

  组别   固 体   气 体
    1____________
    2____________
（III）图（3）所示的甲、乙两个实验，集气瓶底部预分别装有少量氢氧化钠溶液和水．它们的作用分别是：甲中______，乙中______．
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