Đốt cháy hoàn toàn 8.4g Fe trong khí oxi. Thể tích khí oxi (đktc) tham gia phản ứng là: 2) Trong phòng thí nghiệm(PTN), người ta thu khí oxi bằng cách:

1. am/ going to/ there/ I/ stay/ three days/ for/./ A. I am going to stay there for three days. B. I am going to there stay for three days. C. I am going to stay for three days there. D. I am going to stay for there three days. 2. is/ often/ warm/ in/ weather/ Spring/ the/./ A. The weather is often warm in Spring. B. The weather often is warm in Spring. C. The weather is warm often in Spring. D. The weather is in Spring often warm. 3. Hoa/ on/ Was/ Hanoi/ born/ in/ 5th / January/?/ A. Hoa was born in Hanoi on 5th January. B. Hoa was born on 5th January in Hanoi. C. Was Hoa born in Hanoi on 5th January ? D. Was Hoa born in Hanoi on 5th January. 4. Go/ straight/ traffic on/ after/ lights / the /./ A. Go straight on lights after the traffic. B. Go straight on after the traffic lights. C. Go straight lights on after the traffic. D. Go straight after on the traffic lights. 5. Why/ Music/ very/ important/ is/ her/ to/?/ A. Why is her very important to Music? B. Why is Music important very to her? C. Why is Music very important to her? D. Why is very important Music to her?

Giup minh voi minh se tha like va cam on

21. Can you tell me who ...............this kind of machine? A. invented B. invention C. inventor D. inventive 22. Your teacher writes poems or stories,...............she? A. don’t B. won’t C. didn’t D. doesn’t 23. Excuse me. Can I................in this area? A. smoke B. smoking C. smoked D. to smoke 24. If he...............a student, he will get a discount. A. is B. was C. were D. will be 25. Can you turn..............the light? It’s too dark. A. on B. off C. in D. for 26. We can..............easily in the daylight. A. to read B. reading C. reads D. read 27. What can we do to spend less...............lighting? A. in B. on C. about D. of 28. She is very tired;................., she has to finish her homework. A. moreover B. so C. and D. however 29. Is he an actor ...............a singer? An actor. A. and B. or C. with D. so 30. I suggest ...............money for the poor people in our neighborhood. A. save B. to save C. saving D. saved

Giúp em câu c thôi ạ... Pleaseeee e đang cần gấp lắm Giải chi tiết giúp e ạ

Cho bạn nào 5 sao nếu làm đc bài này

Tìm x, với x là số tròn chục, 91> x > 68

=((((((((((((((((((((((((((((((((((((((((( helpppppp plsss

Dựa vào gợi ý, viết thành đoạn văn (trong ảnh)

Chứng minh :Đối với bất kỳ mặt phẳng nào được chia thành các vùng phân biệt, chẳng hạn như bản đồ hành chính của một quốc gia, chỉ cần dùng tối đa bốn màu để phân biệt các vùng lân cận với nhau. Hai vùng được coi là lân cận nếu như chúng có chung nhau một đoạn đường biên, không tính chung nhau một điểm. hỏi vui thôi :))