Cho 13 gam một kim loại M hoá trị II tác dụng vừa đủ với dung dịch H2 SO4 loãng thì thu được 4,48 lít khí H2 (đkct). Kim loại M là

Viết đoạn văn ngắn trình bày suy nghĩ về quan niệm: cái đẹp chính là đạo đức Mn giúp mình vs mình cần gấp mn giúp mình vs ạ! Em cảm ơn!

Trên tia Ox, vẽ 2 đoạn thẳng OM và ON sao cho OM=3cm, ON=5cm a) Trong 3 điểm M,N,O điểm nào nằm giữa 2 điểm còn lại ? b) Tính độ dài đoạn thẳng MN. c)Trên tia đối của tia MN lấy điểm P sao cho NP=2cm. Điểm N có phải là trung điểm của đoạn MP ko ? Vì sao ? em chỉ cần câu c thôi ạ, cảm ơn mn

Giải giúp mình vs ạ thank Làm nhiêu thì làm nhé kh sao mà làm nhiều thì vote cao hihi

Cần gấp!!! Tìm n nguyên để 2n+1/n-1 không là phân số tối giản trả lời đúng và giải thích giùm mình hứa vote 5*(nếu đúng)

giúp mình giải bài này với mình cần gấp lắm mai mình nộp cjo gv r mình cảm ơn nhìu

Mình cần dò lại kquả, giúp mình nhaa

giới thiệu với bạn bè năm châu về đất nước mình

Giải hộ mình vs ạ 1/ Jason told me that he _______ his best in the exam the _______ day. * 5 điểm A. had done/following B. will do/previous C. would do/following D. was doing/previous 2. The teacher asked Minh _______ in English. * 5 điểm A. what does this word mean B. what that word means C. what did this word mean D. what that word meant 3. The student said that the English test_______ the most difficult. * 5 điểm A. is B. was C. will be D. has been 4. John asked me _______ that film the night before. * 5 điểm A. that I saw B. had I seen C. if I had seen D. if had I seen 5. The guest told the host that _______. * 5 điểm A. I must go now B. he must go now C. he had to go now D. he had to go then 6. “What are you doing now?” the teacher asked Tom. * 5 điểm A. The teacher asked Tom what he was doing now. B. The teacher asked Tom what was he doing then. C. The teacher asked Tom what he was doing then. D. The teacher asked Tom what was he doing now. 7. “Do you know Long’s address?” he asked me. * 5 điểm A. He asked me for Long’s address. B. He asked me if someone knew Long’s address. C. He asked me if I know Long’s address. D. He asked me if I knew Long’s address. 8. “Please stay home when the pandemic is everywhere,” the teacher said to us. * 5 điểm A. The teacher said us to stay home when the pandemic was everywhere. B. The teacher asked us stay home when the pandemic was everywhere. C. The teacher asked us to stay home when the pandemic was everywhere. D. The teacher asked us when the pandemic was everywhere and we had to stay home. 9. “I’ll tell you about this tomorrow, Mary,” said Tom. * 5 điểm A. Tom said to Mary that he will tell her about that the next day. B. Tom told Mary that I would tell you about that the next day. C. Tom told Mary that he would tell her about that the next day. D. Tom said Mary that he would tell her about that the next day. 10. “Please don’t post false information on the Internet,” Kerry said to Susan. * 5 điểm A. Kerry asked Susan to post false information on the Internet. B. Kerry asked Susan not to post false information on the Internet. C. Kerry asked Susan didn’t post false information on the Internet. D. Kerry asked Susan if she didn’t post false information on the Internet. 11. “We should support medical staff and soldiers in the fight against the pandemic,” he said. * 5 điểm A. He told we should support medical staff and soldiers in the fight against the pandemic. B. He said we should support medical staff and soldiers in the fight against the pandemic. C. He said we had to support medical staff and soldiers in the fight against the pandemic. D. He said me we should support medical staff and soldiers in the fight against the pandemic. 12. He said: “It is our responsibility to follow the instructions of the government.” * 5 điểm A. He said that it was our responsibility to follow the instructions of the government. B. He said that it is our responsibility to follow the instructions of the government. C. He said that it was our responsibility and followed the instructions of the government. D. He told it was our responsibility to follow the instructions of the government. 13. “My daughter wrote a letter to the soldiers yesterday,” she said. * 5 điểm A. She said her daughter had written a letter to the soldiers the day before. B. She told her daughter to write a letter to the soldiers the day before. C. She told her daughter wrote a letter to the soldiers the day before. D. She told me her daughter had written a letter to the soldiers yesterday. 14. “Wear a face mask when you are with many people,” my mother said to me. * 5 điểm A. My mother told me wear a face mask when I am with many people. B. My mother told me wore a face mask when I was with many people C. My mother told me to wear a face mask when I was with many people. D. My mother said me to wear a face mask when I am with many people. 18. They/ us/ ready/ donate/ money/ help/ people/ pandemic areas. * 5 điểm A. They told us they were ready to donate money to help people in the pandemic areas. B. They told us they are ready donate money help people in the pandemic areas. C. They said us they are ready donate money to help people in the pandemic areas. D. They told us they were ready to donate money help people in the pandemic areas. 19. He/ said/ not/ meet/ Susan/ week before. * 5 điểm A. He said he met Susan the week before. B. He said he hadn't met Susan the week before. C. He said he hasn’t met Susan last week. D. He said he had met Susan last week. 20. Lan/ told /Nam/ watch/ programs/ TV/ study English/ every Wednesday and Saturday/. * 5 điểm A. Lan told Nam watch programs on TV to study English every Wednesday and Saturday. B. Lan told Nam watch programs on TV and study English every Wednesday and Saturday. C. Lan told Nam to watch programs on TV study English every Wednesday and Saturday. D. Lan told Nam to watch programs on TV to study English every Wednesday and Saturday

Một vườn cây hình chữ nhật có chu vi là 0,48 km và chiều rộng bằng 3/5 chiều dài.Hỏi diện tích vườn cây đó bằng bao nhiêu mét vuông ? bao nhiêu ha