题目

It is c that he will hand over his business to his son when he gets old. 答案：【1】certain（2008?常州）以下是实验室制取气体常用的化学仪器．请回答以下问题：（1）写出仪器F的名称：______；（2）写出实验室用双氧水和二氧化锰制取氧气的化学方程式：______ 2H2O+O2↑