应为
氯化钾中含有少量的碳酸氢钾和氯化镁,为得到纯净的氯化钾晶体,将此不纯物溶于水,并按下列步骤进行实验:请填写所加试剂和生成物的化学式:(1)____;(2)____;(3)____;(4)____.
氯化钾中含有少量的碳酸氢钾和氯化镁,为得到纯净的氯化钾晶体,将此不纯物溶于水,并按下列步骤进行实验:请填写所加试剂和生成物的化学式:(1)\_\_\_\_;(2)\_\_\_\_;(3)\_\_\_\_;(4)\_\_\_\_.
The word “swordsman” in paragraph 4 probably means _____.
The word “swordsman” in paragraph 4 probably means \_\_\_\__.
There was an _____ look on his face when the actress appeared on the stage.
There was an \_\_\_\__ look on his face when the actress appeared on the stage.
早在4000多年前,我国古代使用一种朱红色颜料w.现通过下述实验过程来确定W的元素组成: 根据以上实验现象回答: (1)W的化学式为____. (2)变化的化学方程式为____.
早在4000多年前,我国古代使用一种朱红色颜料w.现通过下述实验过程来确定W的元素组成: 根据以上实验现象回答: (1)W的化学式为\_\_\_\_. (2)变化的化学方程式为\_\_\_\_.