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\(n_{O_2}=\frac{V}{22,4}=\frac{3,36}{22,4}=0,15\left(mol\right)\)
\(2KClO_3\rightarrow2KCl+3O_2\uparrow\)
\(0,1-----0,15\)
\(\Rightarrow m_{KClO_3}=n\cdot M=0,1\cdot122,5=12,25\left(g\right)\)
Vậy khối lượng KClO3 bị phân hủy là 12,25 ( g )
bạn viết sai lỗi chính tả hơi nhìu. Không bt đề đó đúng hay sai nhưng mình có vài chỗ hơi thắc mắc nên không trả lời đc. Mong bạn thông cảm!
01. It is very cold here ..........AT.............. night.
02. I wish you'd stop complaining ......................ABOUT............ your job. Try to finish it.
03. Hung has worked ..........FOR........... ten years now.
04. We both thank you ............FOR.................. the bottom of our hearts.
01.Yesterday the headmaster gave a long but very interesting (speak) to the newcomers. => ________SPEECH_______
02. The situation was (hope). Nobody could do anything to help. =>___HOPELESS____________
03. There were over fifty (music) in the orchestra. =>______MUSICALS_________
04. All students have tried hard to pass the university(enter) exam. =>______ENTRANCE_______
01. It is very cold here at night.
02. I wish you'd stop complaining about your job. Try to finish it.
03. Hung has worked for ten years now.
04. We both thank you from the bottom of our hearts.
01.Yesterday the headmaster gave a long but very interesting (speak) to the newcomers. => speech
02. The situation was (hope). Nobody could do anything to help. => hopeless
03. There were over fifty (music) in the orchestra. => musicians
04. All students have tried hard to pass the university (enter) exam. => entrance
1. Beauty (n) => beautiful (a) => beautifully (adv).
2. Curl (n) => .Curly.. (a).
3. Social (n) => ... (a). (social là tính từ rồi :v)
4. Differ (v) => different (a) => ..difference. (n).
5. Luck (n) => lucky (a) => .Luckily.. (adv) => unlucky (a) => ..unluckily. (adv).
6. Extreme (a) => ..Extremely. (adv).
7. Kind (a) => ..Kindly. (adv).
8. Reserve (v) => .reservative .. (a).
9. Orphan (n) => ..Orphanage. (n).
10. Peace (n) => .Peaceful.. (a).
11. Humor (n) => ..Humorous. (a) => sense of ..Humor . (n).
12.Love (v) => .lovely.. (a).
13.Friend (n) => .friendly. (a) => friendliness (n).
14. Happy (a) => .happily.. (adv) => ..Happiness. (n).
15. Help (v) => ..Helpful. (a).
Bài Làm:
1. The road is too narrow for cars to pass.
2. It is simple and efficient.
Hoặc: Those simple words are so important.
3. Sửa \(\rightarrow\) Quiet
It's so quiet without the kids here.
Hoặc: The countryside is peaceful and quiet.
4. She is a clever girl.
5. My homework is too easy to finish.
6. I'm very happy right now.
7. This room is very dirty.
8. You can't find a better man.
9. He is bad, but she is worse.
Hoặc: The book is very bad.
10. London is farther north than Kent.
11. She gave him a quick glance. (Cô ấy liếc nhanh qua anh ta)
12. Life in the countryside is slow.
13. She works hard.
14. Tom is the fastest runner is my class.
Good luck!
ENGLISH 8: WORD FORM (NEXT)
16. Introduce (v) -> introduction... (n).
17. Generous (n) -> ..generosity. (n).
18. Invite (v) -> ..invitation. (n) -> invited (v).
19. Arrange (v) -> ..arrangement. (n).
20. Agree (v) -> ..agreement. (n).
21. Emigrate (v) -> .emigrant.. (a).
22. Speak (v) -> speech (n).
23. Invent (v) -> ...Inventor (n) -> invented (n).
24. Assist (v) ->assistance ... (n).
25. Demonstrate (v) -> .demonstration.. (n).
27. Exhibit (v) -> .exhibition.. (n).
28. Commerce (n) -> ...commercial (a).
29. Succeed in (v) -> successful (a) -> .successful ly.. (adv).
30. Deliver (v) -> .deliverable.. (a).
31. Introduce (v) -> introduction... (n).
32. Deaf (n) -> deafen (a).
33. Steam (v) -> ..steamer. (n).
34. Cook (v) -> .cooking.. (n).
35. Safe (a) -> safely (n) -> safety (n).
36. Soft (a) -> ..softly. (adv).
37. Destroy (v) -> .destruction.. (n) -> destructive (a).
38. Injure (v) -> injured (a) -> injury (n).
39. Electric (n) -> ...electricity (n) -> electrical... (a).
40. Danger (n) -> .Dangerous.. (a).
1.Sao Mai movie theater is near my aunt’s house.
Sao Mai movie theater is next to my aunt's house.
2.I’ll telephone you tomorrow morning.
I’ll give me a call tomorrow morning.
4. Sao Mai Movie Theater is near my aunt's house .
=> Sao Mai Movie Theater isn't far my aunt's house
1. Vinh really loves to hang out with his friends.
=> Vinh really enjoys hanging out with his friends.
2. Playing beach games is very interesting.
=> It is interesting to play beach games.
3. Most ethnic people Vietnam speak their own language ( Make question )
=> Do most ethnic people in Vietnam speak their own language?
4. The girl works hard. Her step mother wasn't happy ( Use although )
=>Although the girl worked hard, her step-mother wasn't happy.(bạn viết sai vì một câu phải dùng cùng thì chứ không vừa past vừa present nha)
1. Vinh really loves to hang out with his friends.
=> Vinh really enjoys ....hanging out with his friends...............
2. Playing beach games is very interesting.
=> It is very interesting.to play beach game.........................................
3. Most ethnic people Vietnam speak their own language ( Make question )
=> .........Do most ethnic people Vietnam speak their own language.?......................................
4. The girl works hard. Her step mother wasn't happy ( Use although )
=> ...........Although the girl works hard,her step mother wasn't happy....................................
a) \(4Cr+3O_2\rightarrow2Cr_2O_3\)
b) \(2Cu+O_2\rightarrow2CuO\)
c) \(2Ca+O_2\rightarrow2CaO\)
d) \(4Al+3O_2\rightarrow2Al_2O_3\)
Bn ơi đây là môn hoà học chứ ko phải môn tiếng Anh