题目

   A When I was six, Dad brought home a dog one day, who was called “Brownie”. My brothers and I all loved Brownie and did different things with her. Ore of us would walk her, another would feed her, then there were baths, playing catch and many other games, Brownie, in return. loved each and every one of us. One thing that most touched my heart was that she would go to whoever was sick and just be with them we always felt better when she was around. One day, as I was getting her food, she chewed up(咬破)one of Dad’s shoes, which had to be thrown away in the end. I knew Dad would be 气体的实验室制取是初中化学重要的实验.请你结合下列实验装置图,回答有关问题:________ (1)写出图中①仪器的名称:________. (2)实验室用过氧化氢溶液和二氧化锰制氧气时,可选________(填字母)装置作为发生装置. (3)写出加热高锰酸钾制取氧气的化学方程式:________. (4)如果用C装置收集氧气,气体应从________(填“a“或“b”)端管口通入.
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