Đốt cháy 10,8g magie trong 3,36 lít khí oxi (đktc) a)Magie hay Oxi, chất nào còn dư và dư bao nhiêu gam ? b) Tính khối lượng magie oxit thu được.

Các câu hỏi liên quan

III. Use the prompts to write sentences, as in the example: 1. he / every day / work / on the computer → He works on the computer every day. 2. Susana / at the weekend / do her laundry → …………………………………………………………. 3. My friends and I / at the weekend / go fishing → ……………………………………………………. 4. he / every morning / read the newspaper → ………………………………………………………….. 5. Sharon / exercise / in the morning → ………………………………………………………………… 6. dinner / they / at 7:30 / eat → ………………………………………………………………………… IV. Write questions and negations as in the example. 1. Tom lives in England. → Does Tom live in England? Tom doesn’t live in England. 2. Mr Simpson teaches Chemistry. →………………………………………………………………….. 3. You like playing computer games. → ………………………………………………………………. 4. John and Sue work in a café. → …………………………………………………………………….. 5. We do the shopping on Saturdays. → ………………………………………………………………. 6. The baby cries all the time. → ………………………………………………………………………. V. Fill in do / don’t, does / doesn’t. 1. Sam speaks French, but he ……. Speak Russian. ​2. Ann …… like jazz music but she likes pop music. 3. “…….. she play the saxophone?” “No, she ……”. ​4. Where ….. you work? 5. He …….. go to school on Sunday. ​6. What …... you have for dinner? VI. Match the questions to the answers. 1. What time does she get up? ​A. She goes to bed at 10:00. 2. How does she go to school?​B. She walks to school. 3. Does she have breakfast every day? ​C. She gets up at 7:00. 4. What does she do in the afternoon?​D. No, she doesn’t. 5. When does she go to bed?​E. She does her homework.