Bài 16: Để điều chế 1 tấn KNO3 người ta cho KOH tác dụng với HNO3. Tính khối lượng của KOH và HNO3 cần dùng đề điều chế Bài 17: Một loại thép có chứa 98% là sắt được điều chế bằng cách cho Fe2O3 tác dụng với H2. Tính khối lượng của Fe2O3 và thể tích khí Hiđro cần để điều chế 10 tấn thép loại trên Mn giúp mk giả bài 16 vs bài 17 với ạ

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Rewrite the following sentences: 15, What a shame you didn't tell me earlier. --> If only.............................................................................. 16, She can't go camping because of her age. --> If....................................................................................... 17, What would you do if there was an earthquake? --> Supposing....................................................................... 18, Lan feels tired now because she ate too much this morning. --> Lan wouldn't................................................................... 19, Pay me back the money, or I will tell your mother. --> If......................................................................................... 20, What a pity Mai can't come. --> I wish..................................................................................... 21, My sister regretted not working hard before. --> My sister wished...................................................................... 22, We should leave now , otherwise we will be late for the class. --> If we.................................................................................................. 23, I am sorry that I asked her to stay. --> Now I wish...................................................................................... 24, He lost his money because he wasn't careful . --> If he........................................................................................................ 25, It was his own fault that he lost his job. He was late for work every morning. --> If he................................................................................................... 26, I only made that mistake because I didn't think. -->If I............................................................................................................. 27, I only bought that dog because my children wanted a pet. --> If my children....................................................................................... 28, It was overeating that cause his heart attack. --> If he hadn't ........................................................................................... 29, he did that way because he didn't listen to our advice. --> If he......................................................................................................