Mọi người ơi và các chuyên gia toán giúp mk với ạ

Viết PTHH để biểu diễn các biến hóa sau: Na -> Na2O -> NaOH Ca -> CaO -> Ca(OH)2 C -> CO2 -> H2CO3 P -> P2O5 -> H3PO4 S -> SO2 -> SO3 -> H2SO4

Dân chuyên văn đâu rồi? Giúp em nha! ------------------------------------------------------------------------------------------------------------------------------------------------------ Cho khổ thơ sau: "Khi con tu hú gọi bầy Lúa chiêm đang chín trái cây ngọt dần Vườn râm dậy tiếng ve ngân Bắp rây vàng hạt đầy sân nắng đào Trời xanh càng rộng càng cao Đôi con diều sáo lộn nhào từng không...'' a) Tìm các từ có cùng trường từ vựng trong đoạn thơ trên. Em hãy cho biết đó là trường từ vựng gì? b) Hãy viết đoạn văn ( khoảng 12 câu) theo cách lập luận quy nạp phân tích bức tranh mùa hè sôi động qua tâm tưởng của nhà thơ Tố Hữu. Trong đoạn văn có sử dụng câu cảm thán và 1 trường từ vựng.

Tìm x biết: 3 . ( x + 5 ) = x - 7

Mọi người giải từ bài 1 đến hết nha 1. Read the following passage and put a word in the box in each of the numbered blanks. on mixed easy didn’t ingredients If you’re a terrible cook, you’ll love this story! Last month, my Mum bought me a recipe book. The recipe looked very (1) ____________, so I decided to make pizza for dinner one evening. I bought the (2) __________ and then I started to make the bread for the pizza. I (3) ____________ flour, salt and water in a bowl. I was listening to music (4) __________ the radio. It was very loud, so I (5) ____________ hear my brother come into the kitchen. He shouted my name and scared me. I dropped the bowl. The flour and water went all over the table, the floor and my trousers. II. Choose the correct word A, B, C or D for each gap to complete the following passage. We need calories or (1) ¬____________ to do the things every day. For example, when we walk to school or (2) ___________ a bike to school we spend a certain amount of calories and even (3) ____________we sleep, we also use them. But how many calorie should we spend a day to stay (4) ____________ shape? It’s difficult for us to calculate. If people want to keep fit, they should remember that everyone should have between 1600 (5) ____________ 2500 calories a day. 1 A. food B. energy C. drink D. cloth 2 A. ride B. come C. drive D. go 3 A. how B. what C. when D. why 4 A. on B. in C. at D. to 5 A. and B. or C. because D. so III. Read the passage and do the following tasks below. People in Viet Nam love good food and they often eat three meals a day – breakfast, lunch and dinner. At about seven in the morning, they usually have a light breakfast with a bowl of Pho. Sometimes they have a bowl of instant noodles or a plate of sticky rice before going to work. Lunch often starts at about 11.30, and most of them have lunch at home. They often have rice, fish, meat, and vegetables for lunch. Dinner often starts at about 8.00 in the evening. It is the main meal of the day. People in Viet Nam often have rice with a lot of fresh vegetables and a lot of seafood or various kinds of meat. Then, they often have some fruits and a glass of green tea. The food in Viet Nam is wonderful. A. Write (T) for True or (F) for False statement. Statement True False 1. People in Viet Nam often eat two meals a day. 2. They often have rice, fish, meat, and vegetables for lunch B. Answer the following questions. 1. Do they have a light breakfast with a bowl of Pho? _____________________________________________________________ 2. Which meal is the main meal of the day? ________________________________________________________________ 3. How is the food in Viet Nam? _________________________________________________________________

Vì sao sau khi thực hiện các động tác bật nhảy, ở giai đoạn tiếp đất chúng ta phải khuỵu gối? môn thể dục

Dãy số sau có bao nhiêu số : 1; 6; 11; 16; 21; ...181

III. Choose the correct aswer. 12. Do you always go to school in the morning? -.......... a. Yes, I did b. No, on Thursday I go to shool in the afternoon c. No, I went to school in the afternoon d. Yes, I'd love to 13. Hoa invite all of the classmates.......... her housse. a. For b. On c. To d. With 14. Where did your family go last week? -.......... a. We visit grandparents b. We visited at the grandparents c. We did visit grandparents d. WWe visited grandparents 15. ............? - I gave him a comic book. a. What do you do at his party. b. What did you do at his party? c. What present did you give him? d. What did you give him present? 16. ............ was your parents's mariage anniversary? a. Where b. When c. How d. What 17. Last night I ...... the funfair at Tran Phu. a. Joined b. Did join c. Join d. Joins 18. ........... you and Hoang go to school? a. What b. Were c. Do d. Did 19. Her mother cleaned the flat, .......... cakes. a. Made b. Make c. Did d. Do 20. Did Christ come back home yesterday? a. No, she wasn't b. She visited her friend's house c. Yes, She didn't d. Yes, she did 21. What did they drink? -.......... a. They played the table tennis b. They ate some candies c. they drank beer and wine d. They don't ate Acj nào giỏi anh thì giúp e với ạ

Viết một đoạn văn nghị luận về tính khiêm nhường ( khoảng 12-15 dòng) . Trong đó có một cây chứa thành phần khởi ngữ

Giải phương trình: (x+4)(x²+ $\frac{1}{2}$x-1,5)=(3-x)(x²+ $\frac{1}{2}$x-1,5)