……………… Bài này lớp 7 làm đưtk :(

X là hỗn hợp Mg và Zn, Y là dung dịch H2SO4 chưa rõ nồng độ. - Thí nghiệm 1: Cho 24,3 gam X vào 2 lít Y được 8,96 lít H2 (đktc). - Thí nghiệm 2: Cho 24,3 gam X vào 3 lít Y được 11,2 lít H2 (đktc). Tính nồng độ mol của dung dịch Y và khối lượng Mg, Zn có trong hỗn hợp.

mọi người ơi mấy câu trắc nghiệm này mình chưa lm đc, mọi người giúp mình vs ạ Hứa vote 5 sao và ctlhn

cả nhà giúp e giải bài này với ạ em cảm ơn

Thực hành tiếng địa phương •Rèn chữ và dịch bằng cách chuyển tiếng địa phương sang tiếng phổ thông như trong ảnh Gợi ý: °Phiên âm Ếu lệnh ya(đọc là:ê-đa) ếu chú,pan thếch ếu chi? $=>$Nia chộ kớn ếu múc lị tê lỉn yưn(đọc là:ê-đưn). Cách chuyển:y(đọc là ếđ)->h,ch->gi Lưu ý:Nghiêm cấm hành vi coppy đề để trả lời

Giúp em với đc ạ em ko biết làm

giải hộ mình PT này nha 120 giải hộ mình PT này nha 120/x = 120( x - 6 ) - 2/3

16. I join a photography club and all the members love reasons__________ a lot of beautiful photos. A. make B. take C. making D. taking 17. Will you __________ making models in the future. A. find B. take up C. look for D. pick up 18. A hobby helps you connect with __________ people. A. the other B. another C. other D. others

MIK Cần gấp tối nay là deadline rồi mong mn giúp mik nhanh với ạ XIII. Choose the underlined word or phrase, A, B, C or D that needs correcting. 1. The ritual is made in order to thank the Sun Goddess for the rice harvest. 2. I found it very excited to take part in the spring festival of Bai Dinh Pagoda. 3. I like both the green or the blue T-shirt, but I don’t have enough money to buy two T-shirts. 4. Your marks in English are low although you don’t study hard enough. 5. Which festival do you like much, Huong Pagoda or Hung Temple? 6. We follow a custom to buy lanterns and moon cakes at Mid-Autumn Festival. 7. Before Tet, Vietnamese people are busy cleaning and decorating their houses andthey cook traditional foods. 8. Until recently, people talk to each other instead of relying on texting and e-mail to communicate with their peers. 9. She was offered the prestigious job, however she turned it down because she did not want to move to Texas. 10. It started to rain hardly while we were playing some folk games at the festival. XIV. Supply the correct tense or form of the verbs in brackets. 1. Hung King Temple Festival ____________(become) one of the greatest nationalfestivals in Viet Nam for a long time. 2. The Saint Giong Festival ____________(hold) many years ago but it officially ____________(become) a national festival in the 11th century. 3. While children ____________(wait) for the moon to rise, they sing, dance andlisten to the story of Hang Nga and Cuoi. 4. The local authority ___________(arrange) a meeting on promotion of the festivallast Friday. 5. Our school ____________(take) part in the festival since 2008. 6. While we ____________(play) some folk games at the festival, it started to rain heavily. 7. Each year, thousands of tourists ____________(come) to visit Lim Festival and enjoythat Intangible Cultural Heritage. 8. Traditionally, Quan ho songs ___________(perform) by both men and womenon the boats and in the Lim Pagoda. 9. Duong recommended Peter ____________(attend) the Hue Festival. 10. Before Tet, women are very busy ____________(prepare) traditional foods. XV.A. Write the correct form of the words in brackets. 1. At the end of the service, a lot of ____________ streamed down to the altar. (worship) 2. ____________ lanterns feature special heritage night at Hoi An. (float) 3. ____________activities are official procession, sporting events and singing. (festival) 4. ____________for the Lunar New Year begin weeks before the festival. (prepare) 5. Tet is the privileged occasion for family members to ____________. (reunion) 6. Hung King Temple Festival is held in __________ of Vietnam’s first kings.(commemorate) 7. The tribe has different ____________ masks for each ceremony. (ceremony) 8. ____________ of culture can be achieved by keeping cultural elements, such asfood, clothing, shelter, and language. (preserve) 9. The Whale Festival is ________ of the many different festivals in villages inVietnam. (type) 10. HatXoan is a folk song ____________ in festivals and worshipping genie. (performance) B.Give the correct form of the word given to complete the sentence. 1. To make Chung cake, the rice and green bean has to be______ in water for a day to make it stickier. (SOAK) 2. Vietnamese families plan their_____ around their children on Tet holiday. (ACTIVITY) 3. Parents would use the Mid-Autumn Festival as an opportunity to show their love and ________ for their children. (APPRECIATE) 4. Lanterns represent____ while the procession symbolizes success in school. (BRIGHT) 5.I am writing to express my ________ of my stay at the Eden Hotel in London last weekend. (SATISFY) 6. At the end of the service, a lot of ___________ streamed down to the altar. (WORSHIP) 7._________ lanterns feature special heritage night at Hoi An. (FLOAT) 8.__________activities are official procession, sporting events and singing. (FESTIVAL) 9.__________for the Lunar New Year begin weeks before the festival. (PREPARE) 10. Tet is the privileged occasion for family members to _________. (REUNION) 11. Hung King Temple Festival is held in ________ of Vietnam’s first kings. (COMMEMORATE) 12. The tribe has different ________ masks for each ceremony. (CEREMONY) 13. _________ of culture can be achieved by keeping cultural elements, such as food, clothing, shelter, and language. (PRESERVE) 14. The Whale Festival is ____ of the many different festivals in villages inVietnam. (TYPE) 15. HatXoan is a folk song ___________ in festivals and worshipping genie. (PERFORMANCE) 16. When Alice heard footsteps, she was ____________ and started to run. (FRIGHT) 17. Cinderella’s stepmothers was ___________ and treated her ________. (KIND-BAD) 18. Jack is very bright, but he’s also ____________ of his accomplishments at school. (BOAST) 19. When Jack was going to the market, he met a __________. (MAGIC) 20. She smiled __________, waved, and vanished into thin air. (WICKED)

1.tìm số tự nhiên n thỏa mãn a, (1/1x3+1/3x5+1/5x7+1/7x9+1/9x11 b, n/2+n+n/3+n+n+n/4=23/6 2,tính bằng cách thuận tiện nhất a,1996x1001-1996 b, 3x45x12+9x53x4+36+36