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hòa tan hoàn toàn 5,4g nhôm vào dung dịch H2SO4 9,8% a) tính thể tích khí sinh ra b) tính khối lượng muối tạo thành c) tính khối lượng dd H2SO4 9,8% d) nếu hòa lượng nhôm trên vào dd chứa 18.25 gam axit clohidric thì khối lượng khí sinh ra là bao nhiê

Sẽ ra sao nếu đưa "Recycle Bin" vào "Recycle Bin-Shortcut" ko dám làm thử nên lên đây hỏi ;-;

Viết đoạn văn nghị luận xã hội 1000 chữ nêu cảm nhận của em về đại dịch Covid và những việc làm có ý nghĩa nhất của em trong những ngày dịch đã qua!

Hỗn hợp khí A gồm CO,N2 và O2 (trong đó thể tích Ni tơ gấp 4 lần thể tích Oxi). Biết 33,6 lít hỗn hợp A ở đktc cân nặng 42,72g . Hãy tính % theo thể tích mỗi khí trong hỗn hợp A.

Tóm tắt văn bản: Cuộc chi tay của những con búp bê(từ 5-7 câu) không sao chép mạng

2. Many people don't like Jack because he (always/ cheat) ____________________ in the exams. 3. These days, the university (support)__________________ by private funds as well as by tuition income. 4. “Did you remember to buy the magazine I asked you?" "Sorry, I didn't. I (buy)______ it when I go out again." 5. There’s somebody walking behind us. I think we (follow) _________________________. 6. That Mai always (talk)________________________ in class affects other students around. 7. - "What happened to the old postman?" - "He (send)______________________ to a new town to work." 8. I think we (have)____________________ enough time to eat before the film, so let’s find a café.

11,Don’t let me forget to phone my sister.  Remind .............................................................................................................................................................. 12 At first I didn’t want to apply for the job but Sarah persuaded me.  Sarah persuaded ............................................................................................................................ 13. My lawyer said I shouldn’t say anything to the police.  My lawyer advised ........................................................................................................................................... 14. I was told that I shouldn’t believe evrything he says.  I was warned ........................................................................................................................................................ 15. At first I didn't want to come to the party, but Lan persuaded me. -> Lan persuaded ___________________________________________________________________ 16. Winning the football pools meant we could buy a new car ( enables )  Winning the football pools ____________________________________________________ a new car 17. If you’ve got a car, you are able to travel round more easily .  Having a car enables ____________________________________________________ 18. A good intake of vitamin E prevents thinking decline, particularly in the elderly.(passive voice) -> ____________________________________________________________________________________ 19. The human brain can read 1,000 words per minutes..(passive voice) -> ____________________________________________________________________________________ 20. If the human brain were a computer, it could perform 38 thousand trillion operations per second. (passive) -> ____________________________________________________________________________________

Put the verbs in parentheses into the correct form. 1. It was very kind of you (show)................................................................ the way. 2. The teacher let him (stay) .......................................................... at home to finish the assignment. 3. It was quite a surprise (see) …………………….............................. him again. 4. It was very difficult for her (drive)..................................................... the motorbike. 5. I could feel the robber (come) ....................................................... from the backdoor. 6. Tommy admitted (throw) .................................................... the rock through the window. 7. Paul really didn’t mind (surprise) …………............................ by the party to celebrate this fortieth birthday. 8. Anne hoped (invite) ........................................... to join the private club. 9. Most people enjoy (travel) ..................................................................... to different parts of the world. 10. May I change the TV channel, or do you want (watch) .......................................... more of this programme? 11. A: Did you get the train tickets? B: No, I forgot all about it. I (book) _____________________ them tomorrow. 12. The sky has gone really dark. There (be) ____________________ a rain. 13. A: I need some more ink for the printer. B: I (go) __________________ to the shop and get some. 14. Phong says he (be) ____________________ a policeman when he grows up. 15. A: What is the milk used for? B: I (make) _____________________ some yoghurt.

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