Một bình chứa 33,6 lít khí oxi điều kiện tiêu chuẩn với thể tích này có thể đốt cháy ,a.bao nhiêu gam cacbon và tạo bao nhiêu cacbon đioxit, bao nhiêu gam lưu huỳnh và tạo bao nhiêu lít lưu huỳnh đioxit,c.bao nhiêu gam p và bao nhiêu gam diphotpho pentaoxit

Giúp mình với 1. If it _____ convenient, let's go out for a drink tonight. A be B is C Was D Were. 2. If they had enough time, they_____ head south. A will B can C must D might

If you study hard, you _______ pass the exam. * 1 điểm A. are B. is C. will D. have If you ______ (help) me, I will help you. * 1 điểm A. helps B. will help C. helped D. help If we plant more trees, _________________. * 1 điểm A. the air will be fresher. B. fish will die C. we will save money D. we will keep fitter. If we _____ (miss) the bus, we ______ (take) the taxi. * 1 điểm A. miss/ will take B. will miss/ will take C. will miss/ take D. miss/ take If we use reusable bags for shopping, ___________. * 1 điểm A. we will save a lot of water. B. we will reduce waste. C. fish will die D. we will take a lot of money.

Đốt cháy hoàn toàn 4,48 lít khí Metan trong không khí thì cần bao nhiêu lít không khí. Biết V không khí = 5 lần thể tích oxi

Ai giải giúp mình làm bài này với ạ!

Giúp đi mng ui Tính đơn thức: x²y - 4x²y + (1/2x)²y

Hãy so sánh tác dụng của ròng rọc cố định và ròng rọc động khi kẻo vật so với khi kéo vật mà ko dùng các dung cụ trên

Help me 7,8,9,10🙏🙏🙏🙏🙏🙏😭😭😭😭😭

Hiện nay bầu không khí của chúng ta như thế nào? Nguyên nhân?

I. Fill in each blank with the simple past tense of the verb from the box. Play go do buy teach lose score win become enjoy 1. My friends and I__________swimming yesterday morning. 2. We really__________the game last Sunday. 3. In 1958, at the age of 17, Pelé__________his first World Cup. 4. The Canadian hockey team__________six goals against Switzerland. 5. The home team__________very well, but they lost the match. 6. My father__________me how to ride a bike. 7. I__________a new baseball cap last week. 8. At the age of 17, Messi__________the youngest official player and goal scorer in the Spanish La Liga. 9. She has a black belt in karate. She first__________karate when she was seven. 10. Argentina__________1 - 0 to Germany in the final. II. Fill in the sentences with the correct form (past Ssimple) of the verbs in brackets. 1. I__________(see) the film last night but I __________ (not like) it. 2. __________ (Marco/ win) the golf competition? 3. They__________(not play) very well yesterday They__________(lose) the match. 4. How many goals__________(your team/ score) in the first half? 5. I__________(be) very tired, so I__________(go) to bed early last night. 6. __________(you/ go) swimming this morning? 7. The children__________(not be) hungry, so they __________ (not eat) anything. 8. Susan and her friends__________(come) to Japan three months ago. 9. I__________(have) a wonderful holiday with my family last July. 10. Jane__________(not be) at the party last Sunday, so she__________(not know) what happened.