Vẽ ảnh dưới ! ☺ ( Không phạm luật Hỏi Đáp ) ^^

Cho 4,4 gam hỗn hợp X gồm Mg và MgO phản ứng hoàn toàn với dung dịch axit sunfuric loãng, dư, thu được 2,24 lít khí (đktc). Khối lượng MgO có trong hỗn hợp X là

Vẽ Ran ạ NL: Các bạn biết cách viết phân số trên hoidap247 ko, chỉ mình với

Làm hộ 1+2+3+..................+19+20 Giải theo 2 cách dùm vs

Ex 2. Fill in "have/has" 1. During the five years, John _____ had 15 different jobs. 2. He _____ worked in a banking sector. 3. Teddy ______ been a teacher since 2004. 4. I ______ been on holiday for six days. 5. I and Kate ______ started our own company this year. 6. _____ your mother learned how to drive. 7. They ______ never been to Madrid. 8. ______ you ever met anyone famous? 9. We _____ been married for two years. 10. Jude ______ not seen my new address. Ex 3. Fill in "since/for" 1. She's lived here ______ 1975. 2. He's been in London ______ five days. 3. They haven't been used _______ many years. 4. She's been working ______ nine this morning. 5. I haven't eaten _______ hours. 6. It has been raining ______ ages. 7. India has been independant ______ 1947. 8. They have been married ______ October. 9. How many years is it ______ you graduated from junior high school? 10. We have been waiting ______ twenty minutes. 11. I have been a teacher ______ 30 years. 12. Bob has worked in that import-export company ______ he was 20. 13. I have studied English ________ four years. 14. Jenny has eaten five hamburgers ______ 7 pm. 15. My parents have been married ______ twenty years. 16. I have known my best friend _______ I met him at high school. 17. They have traveled in the USA _______ one month. 18. The boys have played tennis _______ two hours. 19. Kevin has been in Greece ______ July. 20. My brother has drunk beer _______ two hours.

Giup minh voi minh that su ko biet lam Minh chi co 10 diem thoi nen giup nhe lau cung dc

xin giup vs helppppppppppppppppppppppppppppppp

để thành công thì có 1% là tố chất thông minh còn 99% là do nghị lực của con người hãy trình bày bằng 1 đoạn văn tổng phân hợp

1 Hãy vẽ và trình bày cách vẽ tia tới và xác định góc tới và góc phản xạ trong trường hợp sau

612dm2= m2 dm2 50043cm2= m2 cm2 7dm2 19cm2= cm2 1/2m2= dm2 50cm2= dm2 1/100m2= cm2 đổi giùm mk nhớ giải thích luon