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题目 空气也是一种物质 ,请你设计一个实验测出烧瓶中空气的质量 ,要求写出所需器材及实验步骤 .解答 器材 :天平、砝码、烧瓶、带有橡皮管的瓶塞、夹子、抽气机 .步骤 :( 1)调节天平平衡后 ,用抽气机把烧瓶中空气抽出后 ,用夹子夹住橡皮管 ,使烧瓶内处于真空状态 ,将烧瓶放
The subject air is also a substance. Please design an experiment to measure the air quality in the flask and ask for the necessary equipment and experimental procedures. Answering equipment: balance, weights, flasks, stoppers with rubber tubes, clips, Aspirator. Steps: (1) After adjusting the balance of the balance, use an air extractor to extract the air from the flask, clamp the rubber tube with a clamp, and put the flask in a vacuum state. Place the flask.