Hấp thụ hoàn toàn V lít khí CO2 (ở đktc) vào 500ml dd NaOH 1M, sau phản ứng thu được dd X có chứa 25,2 gam chất tan. Giá trị của V là bao nhiêu?
/ )__/ ) ( ╹▽╹ ) / > Giải giúp mik với ạ!!!!
Giúp mình nhé. Làm tốt cho 5 sao.
Tìm lỗi sai và sửa lại : 4. I wear jeans today. 5. I'm not understanding you. 6. I don't like classical music. 7. What does she do tomorrow evening? 8. Which do yo prefer, pizza or pasta?
Mọi người giúp mình với ạ! Mơn nhìu!
Tính giá trị biểu thức (2ab2) : c với a = 4; b = -6; c = 12 [(-25).(-27).(-x)] : y với x = 4; y = -9 (a2 - b2) : (a + b) (a – b) với a = 5 ; b = -3
Viết đoạn văn ngắn (khoảng 10 câu ) để miêu tả lại cảnh đẹp trên quê hương em. (cảnh biển, cảnh đường phố vào sáng sớm, cảnh mùa xuân …). Lưu ý : trong đoạn văn có sử dụng phép so sánh. Gạch chân câu văn có sử dụng phép so sánh đó.
Câu 13: Tìm X, biết: 29 – ( 209/10 x X – 80) : 2010 / 29 = 0
Cho tam giác abc cân tại a có AB=AC=5cm, BC=6cm Phân giác góc B cắt AC tại M phân giác góc C cắt AB tại N Chứng minh a/ MN//BC b/ Tính AM, MC, MN c/ Diện tích AMN Giúp mình với ạ
X/ Supply the correct verb form, positive or negative. Ex: - I was very tired, so I went to bed early. (go) - Mrs. Trang didn’t go to work yesterday. She wasn’t feeling well. 1/ It stopped raining, so I _____ off my raincoat. (take) 2/ The novel wasn’t very interesting. I _____ it very much. (enjoy). 3/ We went to Kate’s house but she _____ at home. (be) 4/ She was in a hurry, so she _____ time to phone you. (have) 5/ The story was very funny but nobody _____ . (laugh) 6/ Tom was very hungry. He _____ like a horse. (eat) 7/ The room was so cold, therefore we _____ well. (sleep) 8/ It was hard work carrying the bags. They _____ very heavy. (be) 9/ The window was open and a bird _____ into the room. (fly) 10/ It was very hot, so I _____ on the air-conditioner. (turn) XII: Write the questions with “Did…….?”and give the answer with “Yes / No” 1. They played soccer yesterday afternoon 1. He sent a letter to his penpal last week 2. She taught us English last year 3. They did their homework carefully 4. The Robinsons bought a lot of souvenirs. 5. Tourist ate seafood at that famous restaurant. 6. The teacher gave her students a lot of homeworks. 7. His uncle took him to se Cham temple 8. Liz bought a lot of souvenirs 9. They put the fish in a big bag 10. Ba wore the cap with a dolphin on it. 11. He thought the little fishwas the most beautiful
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