Em hãy cho biết khối lượng của N phân tử những chất sau: H2O, HCl, Fe2O3, C12H22O11

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Người ta xếp 60 khối lập phương thành một hình hộp chữ nhật như hình bên. Hội nếu sơn tất cả các mặt của hình hộp chữ nhật thì có bao nhiêu khối được sơn 3 mặt, 2 mặt, 1 mặt? Làm cho mình bài 4 bài dưới này với ạ

Spending your free time on the Internet can be fun. You can chat, share photos with friends, and play online games. But some people are addicted to the Internet. They just can’t turn it off. Being online for many hours at a time does not mean you have a problem. The Internet is very useful. Online, you can pay your bills, buy clothes, and read the news. There are many good reasons to spend time online. However, people with an Internet addiction are online too much. They don’t spend time with their friends and family. Instead, they spend their time chatting with their Internet friends, people they have never met in real life. Some also play online games all day or night. Some people with Internet addictions even leave their jobs so they can spend even more time online! People with Internet addictions don’t just go online to shop, have fun, or do work. People who have this problem often go online because they want to escape the stress and problems in their lives. Many internet addicts stop caring about their real lives, and focus only on their online lives. One way Internet addicts can get help is by using special software. This software controls how much time someone can spend online. It tells the computer to turn off the internet after a certain amount time. This helps people focus on real life. The software’s goal is to teach people to use the Internet for good reasons and not just as an escape. 19. which of the following sentences is not true? A. people with internet addiction spend most of their free time on the internet B. internet addiction causes problems in one's daily life C. paying bills online is a useful way to use the internet D. using special software is a way of helping people stop their internet addiction

Mình cần gấp ạ:(((( Có ai giúp mình với. Cảm ơn trước ạ

Bai 1: Cho dạng đúng của động từ trong ngoặe: 1. She already. wadied ( watch) this movie. 2 He (write) his report yet? 3. We. -(travel) to New York lately. 4. They. . (not give) his decision yet. 5. Tracy (not see) her friend for 2 years. 6. 1... (be) to London three times. 7. It.... .. (rain) since I stopped my work. 8. This is the second time I ...... (meet) him. 9. They.... (walk) for more than 2 hours. 10. You.. (get) married yet?

Xác định phép liên kết câu,liên kết đoạn qua những từ ngữ in đậm trong các phần trích sau: A – Người nhà lí trưởng sấn sổ bước đến giơ gậy chực đánh chị Dậu. Nhanh như cắt, 𝗰𝗵ị 𝗗ậ𝘂 nắm ngay được gậy của 𝗵ắ𝗻 . 𝗛𝗮𝗶 𝗻𝗴ườ𝗶 giằng co nhau, du đẩy nhau rồi ai nấy đều buông 𝗴ậ𝘆 ra áp vào vật nhau. 𝗞ế𝘁 𝗰ụ𝗰, 𝗮𝗻𝗵 𝗰𝗵à𝗻𝗴 “𝗵ầ𝘂 𝗰ậ𝗻 ô𝗻𝗴 𝗹í" yếu hơn 𝗰𝗵ị 𝗰𝗵à𝗻𝗴 𝗰𝗼𝗻 𝗺ọ𝗻, 𝗵ắ𝗻 bị 𝗰𝗵ị 𝗻à𝘆 túm tóc lẳng cho một cái ngã nhào ra thềm. (Ngô Tất Tố)

Giải phương trình theo cách đưa về dạng a.x=0 a) 2.(4-2.x) -1=x-3 B) (2.x-1).(x^2-6=0 c) (x+2).(5-4.x) =x^2+4.x+4

Giải cho mình bài 6 !Cần gấp ! Nhưng phải đúng

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