user-avatar
rockketa2
2 năm trước
Tính khối lượng CuSO4.H2O cần thêm vào 500 gam dung dịch CuSO4 8% để thu được dung dịch CuSO4 15%
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Ex1: Rewrite these sentences so that it has the same meaning as the root ones 1. There are four people in her family. -> Her family……………………………………………………. 2. My house is behind the hotel. -> The hotel ……………………………………………………. 3. Does your class have twenty-five students ? -> Are ………………………………………………………….. 4. He goes to work at seven fifteen. -> He goes to work at a ………………………………………… 5. I often go to bed at nine fifty p.m -> I often go to bed at …………………………………………… 6. The drug store is to the right of the bakery -> The bakery……………………………………………………. 7. Our address is 20 Hong Bai street. -> We……………………………………………………………. 8. I walk to school. -> I go……………………………………………………………. 9. Trung is Mr. Nam 's son -> Mr Nam ………………………………………………………. 10. How old is she ? -> What…………………………………………………………… 14. I don't live very far from her -> I live……………………………………………………………. Ex2: Use the provided words to make the sentences 1. I / play / chess / Mondays 2. Tung / not / brush / teeth / everyday 3. He / play / guitar / living room 4. what / they / do / every afternoon ? 5. How / many / brother / you / have ? 6. She / wash / face / the morning 7. How / often / your / sister / go / cinema ? 8. We / not / listen / music . 9. She / have / any / brother ? 10. How / many / potato / there ? 11. Minh/usually/not/sleep/early/at weekends. 12. You/understand the questions from your teacher? 13. My family/normally/eat/breakfast/6.30. 14. Peter /not/phone/mother/Mondays. Ex 3: Find and correct mistakes in the following sentences 1. What does they wear at their school? 2. Do he go to the library every week? 3. Windy always watch TV at 9 p.m before going to bed at 10 p.m. 4. Sometimes, we goes swimming together with her family. 5. How does Linda carries such a heavy bag? 6. He is the taller than Tuan 7. What does your father’s job? 8. I am shortest student in my family 9. The park is in front the zoo 10. The market is between the clinic, the bakery Ex 4: Put the verbs in brackets in the correct form 1) I ____________ (be) in a cafe now. 2) ____________ (she/play) tennis every week? 3) They ____________ (go) to the cinema now . 4) ____________ (she/be) a singer? 5) Look! He (watch ) TV 6) ____________ (they/be) on the bus? 7) Lucy ____________ (ride) her bicycle to work at the moment. 8) Why ____________ (he/be) in France? 9) I ____________ (not/play) the piano very often. 10) It ____________ (not/be) cold today. 11) We ____________ (be) from Portugal. 12) ____________ (we/make) too much noise at night? 13) Where ____________ (Harry/study)? 14) ____________ (it/be) foggy today? 15) We ____________ (not/be) late. 16) They ____________ (not/like) animals. 17) Where ____________ (you/be)? 18) He ____________ (not/be) an accountant. 19) ____________ (the dog/eat) chicken? 20) She ____________ (be) my sister.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team