Cho m gam hỗn hợp X gồm Al, Fe (có tỉ lệ khối lượng theo thứ tự 3:7) vào 110 gam dung dịch H2SO4 98% (đặc, nóng). Sau khi kết thúc phản ứng thu được 0,75m gam chất rắn (không chứa S), dung dịch Y và 11,2 lít (đktc) hỗn hợp khí SO2, H2S. a. Tính m b. Cho V lít dung dịch NaOH 2M vào dung dịch Y thu được 7,8 gam kết tủa. Tính V Trình bày rõ ràng ko tắt :vv

Câu 1: cho∆ABC.Trên tia đối của tia BA lấy điểm D nào đó khác điểm B và trên tia đối của tia CA người ta lấy điểm E sao cho CE=BD.CMR:BD nhỏ hơn DE. Bài 2:cho∆ABC có AC > AB,M là trung điểm của BC. Nối AM, trên tia đối của MA lấy điểm D sao cho MA=ND. Nối BD.so sánh góc BAM và góc CAM. Câu 3:cho∆ABC có góc A=80°; góc B-góc C =20°.Hãy so sánh các cạnh của∆ABC. Mọi người giúp mình với 😭😭😭😭

giup minh lam bai 1 voi nhe moi nguoi

Ai giúp mình sau đay những chất nào tác dụng đc với khí clo ạ

các bạn giải giúp mình bài 1,2,3,4 nhé

trong cau “Huống chi…vui lòng” bien phap tu tu va tac dung cua cau van help me plsss

giúp mk vs hứa tặng 5 sao cần gấp I. PHONETICS & SPEAKING Choose the letter A, B, C or D the word that has the underlined part different from others. Question 1: A. brave B. fable C. tale D. giant Question 2: A. cunning B. fund C. Buddha D. but Question 3: A. dragon B. emperor C. generous D. orge Question 4: A. knight B. princess C. giant D. find Question 5: A. fold B. folk C. fox D. orge Question 6: A. evil B. cruel C. legend D. generous Question 7: A. wicked B. knight C. lion D. mine Question 8: A. cruel B. cunning C. cure D. buddha Question 9: A. glitch B. chest C. peach D. school Question 10: A. princess B. woodcutter C. emperor D. generous Question 11: A. generous B. good C. glitch D. give Question 12: A. knight B. king C. kick D. kitchen Question 13: A. mean B. great C. feature D. lead Question 14: A. wicked B. kicked C. booked D. leaked Question 15: A. legend B. generous C. giant D. ginger II. VOCABULARY & GRAMMAR Choose the letter A, B, C or D to complete the sentences Question 1: My grandmother often told __________ to me when I was young. A. fairy tales B. court music C. wolf pack D. ogre man Question 2: The fox in the fable “The fox and the grape” is very __________. A. brave B. generous C. cunning D. giant Question 3: Have you ever seen a very huge person, or a __________? A. tale B. evil C. giant D. glitch Question 4: In the story, the princess was walking in the campus of the cattle when an eagle __________. A. appear B. appeared C. was appearing D. appearing Question 5: Unlike Cam, Tam was a __________ and generous girl. A. hard-working B. mean C. wicked D. cunning Question 6: There is a __________ that this temple has an ogre. A. evil B. Buddha C. emperor D. legend Question 7: At 7 p.m. yesterday, the lion __________ its meal in the zoo. A. is having B. was having C. had D. has Question 8: The fable is about a race __________ a tortoise and a hare. A. between B. behind C. next D. front Question 9: The glitch was so __________ that the two kids felt afraid. A. cruel B. nice C. kind D. generous Question 10: Cinderella lives unhappily because her step mother isn’t kind __________ her. A. with B. to C. of D. on Question 11: I __________ of meeting a prince last night. A. dreaming B. dream C. dreamt D. to dream Question 12: The princess __________ by a brave knight after five days. A. was rescued B. rescue C. rescued D. rescuing Question 13: John fell of the ladder when he __________ the wall. A. paints B. paint C. was painting D. painted Question 14: What was the end __________ the story? A. on B. of C. to D. at Question 15: He tried __________ the dragon because it harmed the village. A. beat B. beating C. to beat D. beats

Sắp xếp các phân số theo thứ tự giảm dần

1. He read the poem to us yesterday. The poem has been translated into several languages. A: He reads the poem which has been translated into several languages to us yesterday. B: He read the poem which has been translate into several languages to us yesterday. C: He read the poem which have been translated into several languages to us yesterday. D: He read the poem which has been translated into several languages to us yesterday. 2. The new restaurant looks good. However, it seems to have few customers. A: The new restaurant looks good but it seems to have few customers. B: The new restaurant look good but it seems to have few customers. C: The new restaurant looks good and it seems to have few customers. D: The new restaurant looks well but it seems to have few customers.

Đánh trắc nhiệm giúp mình với nha cảm ơn nhìuuu Câu 1 : cho đường tròn tâm O bán kính 10cm, đường kính AB. Vẽ dây AM căng cung 80 độ. Tiếp tuyến của tâm O tại A cắt tia BM ở C. Tính chu vi tam giác ABC a/ 72,89cm b/ 65,18cm c/ 70,95cm d/ 62,89cm Câu 2 : cho tam giác ABC vuông ở A có góc B=30 độ nội tiếp đường tròn tâm O , tiếp tuyến của tâm O tại C cắt tiếp tuyến ở A tại D. góc ADC bằng a/ 125 độ b/ 100 độ c/ 120 độ d/ 140 độ