4: Hoà tan 5,2g hỗn hợp gồm Mg và Fe bằng dung dịch axit HCl 1M, thì thu được 3,36 lit H2 (đktc). Tính thể tích dung dịch axit HCl đã dùng. a. Viết phương trình phản ứng hóa học xảy ra. b. Tính khối lượng mỗi kim loại trong hỗn hợp ban đầu

Nhanh và gấp ạ!! Tối nay mình nộp rồi!! mong các bạn có thể giúp mình!! Cảm ơn trước

Present simple or present continuous I'm sorry dear, but you____(not/meet) our criteria We usually_____our leadership training in Rome, but this year we (hold) it in Venice We ____(not eat) 🍕 very often What computer game _____( you play) now? I ______( not like ) traditional music. It's boring!

PUT THE VERBS IN THE BRACKETS INTO THE CORRECT TENSES 1 Be quite! The baby (sleep) 2 The sun (set) in the west 3 Mr green always (go) to work by bus 4 It (not rain) in the dry season 5 They ( have) lunch in the cafeteria now 6 My little sister ( drink) milk every day 7 the doctor sometimes ( return) home late 8 He ( write) a long novel at present 9 Look! the bus ( come) 10 The earth ( move) around the sun 11 sometime (smell) good in the kitchen now 12 his uncle ( teach) English in our school five years ago 13 The old man ( fall) as he ( Get) into the bus 14 when I saw him, he ( sit) asleep in a chair 15 there (be) a lot of noise at the fair yesterday 16 it (take) me 5 minutes to walk to school last year 17 They ( not speak) to each other since they quarelled 18 i (try) to learn English for years, but I ( not succeed) yet 19 I ( not see) her since last week 20 Jonh ( do) his homework already 21 The train ( start) before we arrived at the station 22 there (be) an English class in this room tomorrow evening 23 the film already ( begin) when we got to the cinema 24 You (stay) at home tonight? 25 I (be) twenty years old next June 26 Where are you? - I'm upstairs. I(have) a bath 27 All of them ( sing) when I ( came) 28 What you (do) at 7 p.m yesterday? 29 Where you (spend) your holiday last year? 30 why didn't you listen while I ( speak) to you?

E cần gấp. Mấy anh chị làm hộ với ạ

Cho HCN ABCD có AB=7cm,AD=4cm.Trên AD lấy 1 điểm sao cho AF=AB.Trên tia AB lấy E sao cho AE=AD,FC cắt BD tại I cắt AB ở N,EC cắt BD ở G và cắt AD ở M a,C/m MD=BN b,C/m Samgin=Sdgc+Sibc c,Tính Samgin

Mọi người giúp mình với ạ.vote 5 sao cho ng hay nhất

1. The food price will change at the end of this month. A. The food price will be the same until the end of this month. B. The food price of this month will be equal to the one of next month. C. There will be no same food price from now till next month. D. There will be two different food prices next month. 2. All the other schools in the city are more expensive than my school. A. My school is one of the most expensive schools in the city. B. There are some more expensive schools than mine in the city. C. My school is the least expensive school in the city. D. There are some cheaper schools than my school in the city. 3. Does anyone know what this sculpture is worth today? A. Does anyone know if it is deserving to have this sculpture? B. Does anyone know whether someone should own this sculpture today? C. Does anyone know if today this sculpture is valuable or not? D. Does anyone know how much this sculpture costs today? 4. "Stop treating me that way!" she cried out. A. She warned me not to treat her that way. B. She urged me not to treat her that way. C. She begged me not to treat her that way. D. She advised me not to treat her that way. 5. She can do it because she knows the system inside out. A. She can do it because she is from inside the system. B. She can do it because the system is sometimes in and sometimes out. C. She can do it because she understands the system thoroughly. D. The confidential system enables her to do because she knows it

vxẽ cho mik bé mầm mắt sáng như đèn pha ô tô. NL:LU Ạ ><

Bài 1.35. Không thực hiện tính toán, hãy giải thích vì sao kết quả các phép tính sau đây là sai: a, 121+222+323+984+999=2648 b, 121+222+323+984+999=5649