tại sao khi thả quả cầu đặc bằng thép vào trong thủy ngân thì quả cầu chìm ( biết dnc= 10000N/m3, dHg = 136000N/m3

Bài hình nha kh cần vẽ đâu Ai xong nhanh sẽ cho ctlhn và 5* ạ

Bài 1: tính phần trăm khối lượng các nguyên tố trong hợp chất Vd: Tính CO₂ +) CO₂ = 1C + 2O +) Mco₂ = Mc + Mo2 = 12 + 16 . 2 = 44 (g) +) %C = Mc/Mco₂ 100% = 12/44 100% = 27,27% %O = Mo2/Mco₂ 100% = 16.2/44 . 100% = 72,73% "." là nhân 16.2/44 là 16 nhân 2 phần 44 a) Co b) NACL c) FeCL₃ d) NAoH e) KNO₃ f) Ca(OH)₂ g) CuSo₄ h) Ba(No₃)₂

2,020 : 5 + 2,020 : 2 + 2,020 : 4 + 2,020 * 5%

Em có suy nghĩ gì về những hành vi thiếu lễ độ trong cách cư xử của mọi người đặc biệt là học sinh? Thế nào là yêu thiên nhiên sống hòa hợp vs thiên nhiên? Vì sao phải yêu thiên nhiên? Bản thân em đã xác định mục đích học tập của mik như thế nào? Em đã làm gì để thực hiện mục đích đó?

B. built C. was built II. Give the right form of the verbs in brackets: (1.0p) 3. He (start)..... 4. 5. Our uncle often (play) 5. I enjoy (collect) ... - READING (2.0p) ..this hobby 5 years ago. the film Titanic yet? badminton. you (see) dolls and it becomes my pleasur

nêu ý nghĩa của các cuộc khởi nghĩa quý tộc nhà Trấn ai trả lời đúng 5*+cảm ơn+ctrlhn ai trả lời sai, thẳng tay báo cáo, không do dự

cấp cứu mn ơi nhanh nha nhưng đúng 46. VTV1 attracts millions of viewers because it offers many different interesting programmes. A. Although VTV1 has many different interesting programmes B. VTV1 is only appealing to viewers who like thrilling programmes. C. A large number of TV viewers are drawn towards VTV1 because of its variety of good programmes. D. VTV1 attracts millions of viewers, so it must offer many different interesting programmes. 47. Game shows are both entertaining and educational. A. Game shows are neither entertaining nor educational. B. Game shows are either entertaining or educational. C. Game shows are not only entertaining but also educational. D. Game shows are entertaining but educational. 48. I am very busy today. I can't go to the cinema with you. A. I am very busy today, but I can't go to the cinema with you. B. I am very busy today, so l can't go to the cinema with you. C. Although I am very busy today, I can't go to the cinema with you. D. I am very busy today because I can't go to the cinema with you. 49. Phong works very hard. He doesn't earn much money. A. Although Phong works very hard, he doesn't earn much money. B. Phong doesn't earn much money because he works very hard. C. Phong works very hard, and he doesn't earn much money. D. So Phong works very hard, he doesn't earn much money. 50. Daddy, where are we going? is not just for kids; adults love the programme, too. A. Daddy, where are we going? is a program me for kids, not for adults. B. Many programmes like Daddy, where are we going? are both for kids and for adults. C. Adults love kids who participate in the programme Daddy, where are we going? D. Both adults and kids love the programme Daddy, where are we going

Write not more than 120 words inside this space to tell your friends how to protect the school environment.

đặt câu với những gợi ý sau: 1. The first telephone/be/used/commerce/1877 2. Tom and Peter/go/France/last summer. 3. We/not see/each others/ten years. 4.He/graduate/from/the university/1989 5. Hoa/get/good mark/Math, English/Literature/last week 6. He/often/spend/free time/improve/English speaking 7. My mother/ask/I/try/Study/hard/this semester. 8. His brother/use/stay up/late/when/he/be/a child 9. My family/be/here/since/Christmas. 10. Her father/work/this bank/for/a long time. giúp mình với ạ :((( 1