Hỗn hợp A chứa Fe và kim loại M (có hóa trị không đổi). Tỉ lệ số mol của M và Fe trong A là 2:3. Chia A thành 3 phần đều nhau. - Phần 1: Đốt cháy hết trong khí oxi thu được 66,8g hỗn hợp gồm 2 oxit - Phần 2: Hòa tan hết trong dung dịch HCl thu được 26,88lit H2 (dktc) - Phần 3: Tác dụng vừa đủ với 33,6lit Cl2 (đktc) Xác định tên kim loại M và khối lượng của từng kim loại hỗn hợp ban đầu GIÚP MÌNH VỚI Ạ

Tìm công thức hóa học hợp chất gồm lưu huỳnh và oxi trong đó lưu huỳnh chiếm 40% khối lượng

EXERCISE: Complete each of the following sentences with a phrase from the box -in a hurry -in accordance -in advance -in comparison -in contrast -in general -in good company -in need of -in recognition of -in search -in the field of -in the long term 1. Babies are a booming business for the publishing world in particular and the media ……………….. . 2. Use this product only ……………….. . with the manufacturer’s instructions.. 3. - I have failed my driving test. -Oh dear, we are …… ………….. . 4. Some buildings damaged in the earthquake are still ……… ……….. . repair. 5. Sorry, I haven't got time to do it now — I'm ……… ……….. .. 6. However limited its immediate effects, the building of this hydroelectric dam was important ……………….. .. 7. It's cheaper if you book the tickets ……………….. .. 8. The tallest buildings in London are small ……… with New York's skyscrapers. 9. Many of its best-educated residents have been driven to neighboring counties …….. of better jobs. 10. Tesla is best known for his dedication ………. modern physics 11. He received the award ………… his success over the past year 12. The day began cold and blustery, ……………….. .to almost two weeks of uninterrupted sunshine.

Linh has been trying to solve this problem all week but she still hasn't been able to __________ it. A.crash B.crack C.shatter D.break

Giải toán Đại Số Mn Giải Giúp Mình Với Ạ

Các bạn ơi giúp mk ý 3 với ạ!!!!!!!!!!

Giúp mình với ạ mình đang cần gấp

Which feature makes Kagaroos become Astralia national symbol? What does "freedom of speech" mean

PRESENT PERFECT: Simple – Continuous 1. My father …………… (travel) to Berlin twice, on business. 2. How long ………………. (Jonathan/ work) in the construction industry? 3. Mary …………………. (not be) to school for a week. She must be very ill. 4. Sheila ……………… (work) on her Geography project all week. 5. I’m starving! I ……………. (have) nothing to eat all day. 6. Your father ……….. (call) you for Days! Where on earth ..………….. (you/ be)? 7. Who ………………. (use) my laptop? The battery is flat! 8. Mr Johnson, it’s the third time you ……… (be) late this month. 9. James ………….. (think) about his girlfriend all day. 10. The secretary ……………….. (finish) writing the report but she ………… (email) it yet.

90000-2000/2 4900;7/3 2000/3+4000 4000;8/2 8000;4/2 5000/2;5 8000-2000/2