YOU SAID:
I don't know, what is this for. How to chemistry?
INTO JAPANESE
これは何のためなのか分かりません。化学する方法は?
BACK INTO ENGLISH
I don't know what this is for. How to do chemistry?
INTO JAPANESE
これが何のためなのかわかりません。化学を行う方法は?
BACK INTO ENGLISH
I don't know what this is for. How to do chemistry?
Come on, you can do better than that.