tìm hóa trị Na2SO4 tìm hóa trị của SO4

Ngắn lắm chỉ vài câu trắc nghiệm thôi

phân tích đa thức thành nhân tử bằng nhiều phương pháp a)x^2+4x+3 b)16x-5x^2-3

Giải thích giúp mình luôn ạ mình cảm ơn

Tổng số tuổi của 2 bố con là 60,tuổi bố gấp 5 lần tuổi con.Hỏi hiện nay bố bao nhiêu tuổi

18. Our class is much quieter than yours - Your class isn’t………… …… 19. No restaurant in the city is better than that one. - That restaurant is……. 20. No place is so warm and peaceful as our hometown. - Our hometown is the…………………………………………………..

Ex: I feel very tired. (take a day off) => I am going to take a day off. 1. My uncle has won some money. (buy a new car) => 2. They received a wedding present from their pen pal friend, Nick. (write a letter to thank him) => 3. I’ll have an annual holiday next month. (visit Ha Long Bay) => 4. My father has a bad cough. (stop smoking) 5. Linh is studying medicine. (be a doctor) => 6. We have bought some bricks. (build a garage) => 7. The windows are dirty and Mai’ll be free this afternoon. (clean the windows) =>

anh chj giúp em với ạ viết một đoạn văn khoảng 150 đến 200 chữ trình bày cảm nghĩ về một truyện cổ tích mà em yêu thích trong đó có sử dụng 3 trạng ngữ và gạch chân các trạng ngữ đó. em cảm ơn

giúp mk vs nhé mk cảm ơn ko cần giải thick nhé vào làm luôn chỉ cần ghi đáp án đâu nhé!mk cảm ơn

b. Fill in the blanks using the words in the box. sign up drama club arts and crafts indoor activities indoor activities act 1. Why don't you______________ for a book club? 2. Chris wants to be an actor. He's learning how to______________ at school. 3. Jane likes acting. She joined the______________ at school. 4. Some students love doing______________ because they can make pretty things from paper. 5. Volleyball and table tennis are______________. We often play them in the sports center. 6. Many students like playing soccer and tennis. They're ______________. c. Fill in the blanks using the words in the box. sign up history arts and crafts fantasy novel geography drama club literature 1. My favorite subject is______________ I like learning about people in the past. 2. Harry Potter is a famous______________ series. Many people love the magical world in the books. 3. There are many______________ projects before the holidays. You can learn how to make beautiful cards and decorations. 4. Her first______________ is about her childhood in the south of India. Many people, especially girls and women, love it because they can see themselves in her story. 5. Why don't you______________ for an outdoor activity? Being outdoors is great for your health. 6. Matt doesn't like______________. He thinks all the books he has to read in the class are boring. 7. We learn about different countries in______________ class. 8. The______________ is looking for actors for their new play.