Ai làm giúp mình với cảm ơn nhìu

Nghiền nhỏ m gam hỗn hợp Fe2O3 và ZnO. Sau đó dẫn luồng khí CO dư đung nóng đi qua hỗn hợp trên, sản phẩm sinh ra được dẫn qua chậu đựng Ca(OH)2 thì thu được 5 gam kết tủa Mặt khác nếu lấy toàn bộ sản phẩm rắn tác dụng với HCl dư, thu được 986 ml khí H2 (đktc) a) Viết các phương trình phản ứng xảy ra. b) Tính m, suy ra thành phần phần trăm theo khối lượng mỗi chất trong hỗn hợp ban đầu.

em chx hoc bai nay moi nguoi giup em vs,em hua vote 5 sao

Bài 1: Một trong những hiện tượng đáng buồn trong đời sống hằng ngày, đó là nạn sai hẹn: Mời họp vào lúc 8 giờ thì 9 giờ mới thây mọi người đến ; cuộc giao lưu văn nghệ được tổ chức lúc 7 giờ thì phải 8 giờ khách mời mới đông đủ ; đám cưới mời lúc 17 giờ thì mãi đến 19 giờ chủ nhân mới bắt đầu. Phải chăng sự sai hẹn này đã thành thói quen khó sửa? Hỏi: Em nhận xét hiện tượng này như thế nào?

Làm hộ mình câu c nha P= căn x+ 4/ căn x+1 Chú ý DKXD nha

Kết quả thôi ạ, đang ktra nên nhanh giúp e ạ. Em cảm ơn

1/2^2+1/4^2+1/8^2+1/8^2+1/10^2+1/12^2+1/14^2<1/2 KHÔNG CHÉP MẠNG

13. number/ Vietnamese student/ study/ overseas/ increase/ considerable/. A. The number of Vietnamese students studying overseas has increased considerably. B. Number of Vietnamese students to study overseas has increased considerably. C. The number of Vietnamese students study overseas has increased considerable. D. The number of Vietnamese students studying overseas have increased considerable. 14. read/ newspaper/ morning/ give/ he/ please/. A. Read newspapers in the morning gives he please. B. Reading newspapers in the morning gives him pleasure. C. Reading newspapers on the morning will give him pleased. D. To read newspapers in the morning give him please 15. fortunate/,/ biogas/ not/ total/ harmful/ people/. A. Fortunately, biogas is not total harmful for people. B. Fortunately, biogas is not totally harmful to people. C. Fortunately, biogas is not totally harmful with people. D. Fortunate, biogas is not totally harmful of people. 16. we/ should/ think/ positive/ how/ protect/ environment/. A. We should think positively how to protecting our environment. B. We should think positive how protecting our environment. C. We should think positively how to protect our environment. D. We should think positive how to protect our environment. 1. My grandpa/ recover/ quickly/ his serious illness/. A. My grandpa was recovered very quickly from his serious illness. B. My grandpa has recovered quite quickly from his serious illness. C. My grandpa will recover quite quickly after his serious illness. D. My grandpa recovered more quickly over his serious illness. 2. hilltop/ have/ good/ view/ our village/. A. The hilltop can make our village views better. B. From the hilltop, our village can viewed very well. C. From the hilltop, we can have a better view of our village. D. From the hilltop, our village can have a better view. 3. museum/ small/ have/ a lot of/ unique artifacts/. A. This museum is small, but it has a lot of unique artifacts. B. This museum is small because it has a lot of unique artifacts. C. That museum is both small and has a lot of unique artifacts. D. Being small, this museum has a lot of unique artifacts. 4. disappointed/ film/ entertaining/ expected/. A. We were disappointed as the film was more entertaining than we expected. B. We felt disappointed as the film was less entertaining than we had expected. C. We felt disappointed just because the film was entertaining as we expected. D. We were disappointed, so the film was more entertaining than we had expected. 7. In/ past/ most/ girls/ like/ knit/ sweaters/ themselves/. A. In the past most girls like to knit sweaters for themselves. B. In the past most girls liked knitting sweaters for themselves. C. In the past most girls liked to knitting sweaters for themselves. D. In the past most girls like knitting sweaters for themselves.

chỉ cần câu trả lời ko can giai thich

cứuuu...................................