Thành phần của Amphetamine gồm C, H, N chiếm phần trăm theo khối lượng tương ứng lần lượt là 80%; 9,63%; 10,37%. Xác định công thức phân tử của Amphetamine biết trong phân tử có 1 nguyên tử nitơ.

Hứa trả 5 sao, 1 cảm ơn và 1 ctrlhn Làm nhanh hộ với em mik đag gấp

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Câu hỏi 110 điểm Give correct form of Present simple – Present continuous to verbs in brackets. 1. It's seven o'clock and they (go) to school now. 2. Mrs. Cooper (eat) in the restaurant every Sunday. 3. Our cat never (jump) on the kitchen table. 4. Look! The men (wear) blue uniforms. 5. The taxi (wait) for them at the moment. 6. He always (help) his grandmother in the coat. 7. Listen! Bill (play) his electric guitar. 8. He (wash) his car every Sunday. 9. The alarm (ring) at seven o'clock every morning. 10. They always (bring) their aunt a tree for Christmas. Đánh dấu câu hỏi này Câu hỏi 210 điểm Give correct form of Future simple – Future continuous to verbs in brackets. 1. She (not / come) with us, I'm sure. 2. This time next month I (enjoy) the holidays. 3. I think he (find) this work more interesting when he grows up. 4. He (give) me 20$ a day during my stay. 5. Hold on, I (give) you a lift! 6. I suppose the weather (be) good. 7. At 11 p.m. I (sleep) . 8. You can recognize her easily. She (wear) a red skirt. 9. I (help) you as soon as I finish this project. 10. At 10 p.m. I (go) to bed to get some rest. Đánh dấu câu hỏi này Câu hỏi 310 điểm Give correct form of Past simple – Present perfect to verbs in brackets. 1. I (see) a great film yesterday. 2. (you / ever / buy) a cheap laptop? 3. Sue (have) the flu last winter. 4. A few days ago we (drive) to his uncle. 5. They (play) bingo on Wednesday afternoon. 6. He (already / take) the bus to get there. 7. Last week my rabbit (run) . 8. We (do) a lot last Sunday. 9. She (not / wake up) yet. 10. I (not / meet) her since last Thursday. mình sẽ cho 5 sao

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Mn giúp e bài I và II vs Ạ. E cảm ơn

III. Supply the correct forms of the words in brackets (5 points) 1. There are many cultural _____ between his country and mine. (DIFFER) 2. The festivals in my village are always _____ held. (TRADITION) 3. Vung Tau beach is said to be one of the _____ places in Vietnam. (LOVE) 4. You should _____ your trousers, they are too long for you. (SHORT) 5. “Too many _____ spoil the dish” is a famous saying. (COOK)

Bài 1: Đặt tính rồi tính 72458 + 6829 32484 - 9176 2417 x 5 36038 : 4 Bài 2: Tìm x a)1025 + x = 2213 b)x +20456 = 30007 Bài 3: Tính giá trị biểu thức 23 678 - 3 678 : 6 Bài 4:Một hình vuông có chu vi 240cm. Tính cạnh hình vuông đó. Mik đặt chơi thôi nha

II. Each sentence below has ONE mistake. Find and correct it (10 points). 1. Let’s decorate the houses themselves. It must be cheaper. 2. She doesn’t like the room because it is not big enough for her family to live. 3. The cars producing in 1990s were not modern. 4. I think five thousand dongs are not enough to buy a hat at present. 5. “Smoking is not good for your health, Nam” ~ “I see and I promise giving it up soon” 6. Eiffel Tower of Paris is one of the greatest attractions tourist. 7. Nhi wanted to know the rules of play the game 20 questions. 8. Tuan, you’ve done such a big mistake! 9. Nobody have cleaned this street since the storm so it is very dirty now. 10. Do you know to pronounce this word? I