Trộn 100ml dung dịch chứa 20g Na0H với 150 ml dung dịch chứa 20g sắt (III) sunfat sinh ra kết tủa A , dung dịch B . Lọc kết tủa A nung đến khối lượng không đổi sinh ra m(g) rắn a. Lập PTHH nêu hiện tượng xảy ra b. Tính m c. Tính nồng độ mol/l chất trong dung dịch sau pứ kết thúc

Cho hàm số y = ax^2 + bx + c có đồ thị (P) Tìm a,b,c biết P có đỉnh là I(2,-1) và đồ thị cắt trục Ox tại điểm có hoành độ bằng 1 . Vẽ đồ thị P với giá trị a ,b ,c tìm được.

Toán này :((((((((( Vẽ hộ luôn với T^T :((((((((((((((((((((((((((((

Vẽ đoạn thẳng AB có đọ dài là 4cm, vẽcđường tròn (A;2cm)và (B;3cm). Gọi C và D là giao diểm của hai đường tròn. a)Tính AC, AD, BC, BD. Tính chu vi tam giác ABC b)Đường tròn tâm A và đường tròn tâm B chắt AB lần lượt tại I và K.

GIÚP E CÀNG NHANH CÀNG TỐT Ạ CẢ HÌNH NỮA LUN

Make questions for the underlined words: 1. I play football every afternoon after school. ___________________________________ 2. My father is watching television at the moment. ___________________________________ 3. Yes, Mary does the housework. ___________________________________ 4. No, They don’t like listening to music. They like watching films. ___________________________________ 5. They are reading English stories. ___________________________________

20. They (not be) ......................... doctors. 21. He often (get) ......................... up late. 22..........................you often (watch) ......................... TV? 23. Mr.Brown (listen) ......................... to music now? 24. I usually (go) (shop) .........................on the weekend. 25. Hai often (wash) ......................... his face at 6.15. 26. She (play) ......................... badminton at the moment? 27. Thanh and Mai always (see) ......................... a movie on Saturday. 28. He often (take) .........................a bus to school? 29. We (be) ......................... students in class 8A. 30. She often (not do) ......................... homework in the evening. 31. He usually (take) ......................... a taxi to the airport. 32. They usually (not go) ......................... to school by bike.

dùng từ dc cho để viết thành câu

1. Nga eats more than Tung does because she likes fast food. (HEALTHY) 2. Viet Nam is a country with different peoples, religions and traditions. (CULTURAL) 3. Most of the Central Highlands is . (MOUNTAIN) 4. The houses of many ethnic groups are used to worship the ancestors. (COMMUNE) 5. To become friendlier, you should with your workmates. (SOCIALISATION) 6. Paul used to be to soft drinks, but now he seldom drinks them. (ADDICTION) 7. Like my aunt, I want to become a professional dog . (TRAIN) 8. I am of her hometown with a lot of paddy fields. (ENVY) 9. The cattle are herded to a new pasture by the . (NOMADIC) 10. Do villagers today dress as in the past? (TRADITION) 11. Do you think the ethnic _______ people have their own customs and traditions? (MINOR) 12. Which ethnic group has the smallest ______ in Viet Nam. (POPULATE) 13. Some ethnic peoples in the mountainous regions still keep their _________ way of farming. (TRADITION) 14. Which do you think is more _______, the Tay’s or Nung’s costume? (COLOR) 15. If you go to Sa Pa, you should try some ______ of the local people sold at the market. (SPECIAL) 16. Five-coloured sticky rice is a traditional ___________ of Tay people. (SPECIAL) 17. H’mong people live in the northern ___ region of Vietnam. (MOUNTAIN) 18. The Tai are known for their ___________ garments and their houses on stilts. (WEAVE) 19. The ___________ you can find in Sapa include the Hmong, Dao, and Tay. (ETHNIC) 20. Muong people are ___________ more closely related to the Tai people. (CULTURE)

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