Điền hệ số thích hợp để hoàn thành phương trỡnh húa học sau: 1. NH3 + O2 ----- NO + H2O 2. CuCl2 + H2S ----- CuS + HCl 3. CaCO3 + HNO3 ----- Ca(NO3)2 + CO2+ H2O 4. CO + O2 ----- CO2 5. Al2O3 + SO3 ----- Al2(SO4)3 6. Mg + CO2 ----- MgO + C 7. NaCl + H2O ----- NaOH + Cl2 + H2 8. Br2 + SO2 + H2O ----- HBr + H2SO4 9. KMnO4 + HCl ----- KCl + MnCl2 + Cl2 + H2O 10. Al + NaOH + H2O ----- NaAlO2 + H2 11. Al2O3 + NaOH ----- NaAlO2 + H2O 12. NaOH ----- Na+ O2 + H2O 13. NaOH + Cl2 ----- NaClO + NaCl + H2O 14. NH4NO3 + Ba(OH)2 ----- Ba(NO3)2 + NH3 + H2O 15. Na2CO3 + CO2 + H2O ----- NaHCO3 16. NH3 + Cl2 ----- N2 + HCl 17. MgCl2 + NH3 + H2O ----- Mg(OH)2 + NH4Cl 18. ZnCl2 + NH3 + H2O ----- Zn(OH)2 + NH4Cl 19. NO + O2 ----- NO2 20. Ba(OH)2 + Al(OH)3 ----- Ba(AlO2)2 + H2O

Giusp e c106 và 107 ạ, e caem ơn

Cali : bất ngờ 😱😱😱 Mod ở nhóm mk

Xin lũi vì cái đề rắc rối này ;-;;;;; giúp mình với ạ '-'

Exercise 9: Fill in the blanks with the suitable phrasal verbs. You may have to make some changes to complete the sentences ĐIỀN CÁC PRASAL SAU come down with ; (ailments) go away ; get over ; take up 1. I don’t know why my common cold does not ______________. Should I see a doctor? 2. I heard Jane has ______________ rock climbing. Isn’t that very dangerous? 3. The doctor told Mum it was only a stomach upset, not food poisoning, and she would __________________ it in a day or two. 4. Unfortunately, Kim has ______________ a flu, so she won’t join us today

Từ đoạn trích”và chủ nhân …..rất mới rất hiện đại .” ( phong cách Hồ Chí Mình) hãy viết một đoạn văn nêu ý nghĩa của việc học tập theo phương châm HCM ( 10 dòng )

làm câu 2/ và 3/ là được trọn 50đ vote 5 sao ạ

Calli: Tềnh iêuu :D NL: / Hoi the gian tinh la gi.. /

Giúp vs ạ X.y<0 A.x,y cùng dấu B.x>y C.x,y khác dấu D.x<y

Choose the underlined word or phrase in each sentence that needs correcting. 11. The pagoda is much historic and larger than the other ones in this city. 12. Some tourists say that Son Doong, Sung Sot and Dau Go are some of the greater caves in Viet Nam. 13. You mustn't take your raincoat in the heavy rain because you may get wet. 14. Tomorrow, your grandpa will visit us so you should go out with your cousins to play badminton 15. I like watching TV. There are a good film on TV tonight. 16. How many childs does your mother have ? 17. We have Geography every Wednesdays. 18. If you climb the mountain, you will sees a lot of flowers 19. There are five bridge across Han River in Da Nang. 20. They are on holiday for two weeks so they will be here tomorrow.