Đáp án:
Giải thích các bước giải:
axit đặc : Zn+2H2SO4đ->ZnSO4+SO2+H2O
axit loãng :Zn+H2SO4->ZnSO4+H2
giúp mình bài này ạ cảm ơn nhìu nhaa !!
1. I have to change my shoes. These (are killing/ kill) me. I’m sure I have a blister. 2. I feel lost. I’ve just finished a really good novel and now I (do not read/ am not reading) anything. 3. Coming to London for Christmas was a great idea. I (love/ am loving) it here. 4. The company (is moving/ moves) its offices to a bigger building next month. 5. John (gives/ is giving) a lecture on social media at university every Wednesday. You should come. 6. Sally (always interrupts/ is always interrupting) me when I speak. It’s so irritating. 7. Can you help me with this exercise or (are you being busy/ are you busy)? 8. I (hate/ am hating) people who never really listen to what you saỵ.
II. There is one mistake in each sentence. Underline and correct the mistake. 1. A lot of people are good artists and they are successful in life. 2. Music promote creativity, social development, and personality. 3. The Mona Lisa is a portrait painted by the Italian artist Leonardo da Vinci. 4. Your violin is the same with the one I’ve just bought. 5. My mother doesn’t like rock music and I don’t too. 6. The weather of Hong Kong is different from that of Canada’s. 7. How long do you go to the movies? - Twice a month. 8. The weather today is not so hot as it is yesterday. 9. They kept me in the dark. I didn’t knew anything about that robbery. 10. Yesterday class 2B has gone to the National Library.
vẽ đậu mầm/anime/chibi nl:try hard cày chậm v
20d 1 câu toán ạ vvote 5 sao và ctlhn ạ
1. Emily lives and works in Paris but she (have) …………………. a holiday in England at the moment. 2. I wonder why the neighbor’s dog (bark) …………………. again. Maybe there is a burglar! 3. Ann (get) …………………. up at seven o’clock every morning. 4. Then she (go) …………………. to have a shower before breakfast. 5. Then she (drive) …………………. to the beach and stays all day. 6. She (not/ work) …………………. because she won the lottery last year. 7. Why (you/ learn) …………………. English this year? 8. I (live) …………………. with my sister for two months because she is pregnant and I can help her. 9. What (you/wear) …………………. now? In that way, I will recognize you at the airport. 10. Kate is in the kitchen and very stressed! She (cook) …………………. dinner for 30 people.
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Giải hộ mik chi tiết từ b4 và b5 nhé,mk đang cần rất gấp.Cẩm ơn các bạn
dung dịch B chứa các ion Fe3+, Al3+, NO3-. Đã dùng vừa đúng 0,6 lít dung dịch KOH 1M thì tách hết các cation kim loại ra khỏi 100ml dung dịch B. Đổ tiếp dung dịch KOH vào đến dư thì thấy khối chất kết tủa tan dần chỉ còn lại 12,84 gam chất không tan. Tính nồng độ mol hai muối trong dung dịch B
giúp mik vs ạ mik dag cần gấp ai lm nhanh và đúng nhất sẽ đc 1 tym+5sao và câu trả lời hay nhất
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