-giúp pé dới cc ơi!! bài 1:thu gọn các biểu thức a) (a+b-c) + (b+c-a) + (a+c-b) b) (a-b) + (b-c+a) + (c-b) bài 2:tính tổng a) -168+ (-332) -(+600) b) -212 + (-88) - (-591) + 391 c) -187 + (-1907) +619 -1706 +581. -Làm và giải thích giúp pé nha !!!

câu 5c mong mọi người giải chi tiết cho mình hiểu

Đốt cháy 6,2 gam photpho trong bình chứa 6,72 lít khí oxi {đktc} tạo thành điphotpho pentaoxit a) Viết PTHH ,phương trình chữ của phản ứng b) Chất nào dư sau phản ứng , với khối lượng là bao nhiêu? c) Tính khối lượng sản phẩm thu được Các anh chị nào ơi xin hãy giúp em đi

Giúp mình mấy câu trắc nghiệm với. Đừng spam nhé mn, mình đang cần gấp :(

I. Arrange the words to make sentences meaningful. 1. the/ too/ she/ film/ far/ thought/ violent/ to/ to/ children/ show. _________________________________________________________ 2. his/ the/ ever/ latest/ funniest/ he/ film/ is/ of/ has/ one/ made. _________________________________________________________ 3. Halloween/ frightening/ ever/ seen/ is/ one/ most/ films/ of/ the/ I/ have _________________________________________________________ 4. an/documentary/ on/ night/ television/was/ last/ there/ interesting. _________________________________________________________ 5. time/ Titanic/ is/ successful/ one/ most/ of/ the/ movies/ of/ James Cameron’s/ all. _________________________________________________________ 6. all/ it/ although/ film/ the/ has/ plot/ a/ very/ simple/ we/ enjoyed. _________________________________________________________ 7. the/ received/ bad/ good/ and/ film/ reviews/ some/ ones/ some. _________________________________________________________ 8. despite/ failed/ film/ to/ having/ do/ good/ popular/ business/ cast/ star/ the/ a. _________________________________________________________ II. Rewrite the following sentences that keep the same meaning. 1. They released Avengers: Infinity War in April 2018. Avengers: Infinity War___________________________________________________ 2. He didn’t win an Oscar for Best Actor although he performed excellently. Despite___________________________________________________ 3. I find watching Monster Inc. very interesting. I am___________________________________________________ 4. Despite his English-sounding name, James Martin is in fact German. Although___________________________________________________ 5. Unless the bus arrives on time, we’ll miss the beginning of the film. If___________________________________________________ 6. Let’s go to the cinema tonight. How about ________________________________________________________________________ 7. The last time I saw an American romance was three months ago. I haven’t __________________________________________________________________________ 8. The plot wasn’t very interesting, but the special effects were spectacular. Although _________________________________________________________________________

..................................

chứng tỏ rằng a-b và b-a là hai số đối nhau

Giúp mình với nha mình đg cần gấp

Có một hỗn hợp bột gồm Fe và Al biết rằng hỗn hợp này tác dụng vừa đủ với 8,736 l khí Cl2(đktc). Hỗn Hợp này tác dụng với HCl dư và giải phóng 8,064 l khí H2(đktc). a,Viết PTHH b,Xác định %m mỗi kim loại trong hỗn hợp đầu

VI. Choose the suitable words or phrases to fill in the blanks. 1.Milk (brings/ is bring/ is brought/ has brought) to the house by the milkman everyday. 2.We were delighted (getting/ to get/ get/ got) your letter last week. 3.“Would you like to go to the movies tonight?” “I’m sorry, I can’t I (am doing/ do/ will do/ doing) my homework this evening. 4.Milk bottles can be (recycle/ thrown away/ broken/ reused) after being cleaned. 5.This project (is carried out/ carries out/ will carry out/ will be carried out) next month. 6.It’s dangerous (swim/ to swim/ swimming/ swam) in this river. 7.We are looking forward to (seeing/ see/ saw/ be seen) you in June. 8.It’s too cold outside. (Would you like to shut the windows/ Will you shut the windows, please/ Shall I shut the windows/ Can I shut the windows)? – Sure. I’ll do it right now.