关于亚洲河流的叙述，正确的是(    )

①仪器名称：A为____

②小丽用双氧水和二氧化锰制取氧气时，发现反应速率过快，小丽思考后将所用仪器B改为____，该反应的化学方程式为____，若使用装置G收集氧气，氧气应从____（填“a”或“b”）端通入。

③小明选用A到G中仪器，组装出实验室制取二氧化碳装置，他所选仪器有____（填写一套即可），反应的化学方程式为____。

④小刚选用H装置放入锌粒和稀硫酸制取氢气，H装置的优点是____，反应一段时间后他关闭活塞，发现装置中固液无法分离，原因可能为____（写出一种即可）；

⑤小刚用制得的氢气还原氧化铜，得到0.1mol铜，则理论上参与反应的氢气的质量为____（根据化学方程式计算）。

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