Đáp án:
Giải thích các bước giải:
3)` Fe + 2HCl →FeCl_2+H_2`
4)` 2Fe + 3Cl_2 →2FeCl_3`
5) `CuO + 2HCl →CuCl_2+H_2 O`
6) `CuO + H_2SO_4 →CuSO_4+H_ 2O`
7) `BaCl2 + H_2SO_4 →BaSO_4+2HCl`
8) `Na_2 O + 2HCl →2NaCl+H_2 O`
$#NOCOPY$
3) Fe + 2HCl => FeCl2 + H2
4) 2Fe + 3Cl2 => 2FeCl3
5) CuO + 2HCl => H2O + CuCl2
6) CuO + H2SO4 => H2O + CuSO4
7) BaCl2 + H2SO4 => 2HCl + BaSO4
8) Na2O + 2HCl => H2O + 2NaCl
giúp mk với ạ,mk cảm ơn nha
Em hãy kể lại những kỉ niệm ngày đầu tiên đi học Giúp mình với ( lưu ý k chép mạng )
Mong các anh cj giúp em ạ Em cần gấp Em camon trc ạ
lập dàn ý kể lại kỉ niệm đáng nhớ trong kì nghỉ hè
Help me.
Giúp mình làm bài ngữ văn này với mình sẽ vợt cau trả lời hay nhất
15. Yesterday afternoon., the boys ( Break) he WilluOWS W VI. Rewrite the following sentences using the words given: 1. The volunteers couldn't mow the old lady's lawns because of the rain. The rain prevented.the..v.alunte.x...fapm..ma DEAĻI G..thu.. 2. Dave did his homework and then went to bed. After Dave.Aon...ham.kark. Daridl uaento bed. 3. It is easy for anyone to learn how to cook. Learning..,hakt.c.o.o.k.. 4. It isn't polite to ask people about their salary. Asking people...abaut..their.salara..n:t... 5. It costs a lot of money to study abroad. Studying ...abroad.costs.a.lat.of.m.y. 6. It takes my mother a long time to become a doctor. My mother..a.l...tine..become.a..do.cto.. 7.The police arrived too late, so the robber escaped By the time the police arrived .. 8.The phone call interrupted my breakfast. 1 was.... 9.Sheila went out for the evening, but first she washed her hair. Before Sheila...... 10.First Trudy read the book and then she decided that she didn't like it. After Trudy 11.They got to the theatre after the beginning of the play. When they 12.In the middle of our dinner. there was a knock at the door. While we .palis. 13.She didn't get anyone to repair the car for her. She repaired 14. I spent seven vears at secondary school and then I went to university After, 15.1 last saw Bob when I was in Ho Chi Minh City. I haven't seen. 16. You shouldn't cat too much meat. You'd better. ...... 17. I advise you to wear a coat when you go out (had better) THE END
Tính nhanh : a, 14 + 17 + 20 + ... + 1217 b, 31 + 39 + 47 + ... + 591 c, 24 + 31 + 38 + ... + 668
giải hộ mình với. cảm ơn nhiều ạ
Rewrite the sentences 1. The examination was very easy. I left after 20 minutes. → It was such ......................................................................... 2. I'm sure he likes me because he bought me some flowers. → If ................................................................................................
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến