题目

根据下列装置图回答简题 (1) 写出仪器a的名称:。 (2) 实验室用加热高锰酸钾的方法制取并收集氧气,应选用的发生装置为(填序号,下同),若要收集较纯净的氧气,则收集装置为。 (3) 实验室用过氧化氢溶液和二氧化锰制取并收集氧气,若用D收集,则检验氧气是否收集满的操作为,制取氧气反应的文字表达式为。 (4) 比较上述两种制取氧气的方法,请指出用过氧化氢溶液和二氧化锰制取氧气的优点有(写一条即   go  country  chat  bathroom  live  twelve1. People like to talk with each other in the room.2. They want to learn about lifestyles in different.3. Our flat has two. One is in my parents’ room,and the other is in my room.4. Do you like with your friends on the Internet?5. — Would you like shopping with me?—Yes? I d like to.6. Today is Daniel’s birthday. Do you want to come to his birthday party?
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