Hoà tan 11g hỗn hợp gồm (Fe, Al) bằng HCl thu đc 8,96 (l) H2 (đktc) 1) Tính % khối lượng mỗi k.loại trong hỗn hợp đầu 2) Tính hỗn hợp lượng muối thu đc

Chỉ ra cái lợi và cái hại của việc sử dụng Internet( em cần gấp, cảm ơn ạ)

dùng lời cân bằng thật chi tiết pt này (RCOO)3C3H5 + H2O ->..........................

Làm giùm em bài này vs gấp gấp Phần 5 vs 6 la mã ạ Em năn nỉ á

31. she / be / my best friend / for 10 years. => ……………………………………………. . 32. There / be / a lot / interesting / books. =>……………………………………………………….. 33. We/ should/ eat/ more/ fruit / vegetable. => ……………………………………………………… . 34. If/ you/ not/ study/ harder, you/ get/ bad mark. => …………………………………………………………….. 35. She/ not/ go/ school/ because/ the rain. => ………………………………………………………….

Health is something we tend to (1) _____ when we have it. When our body is doing well, we are hardly (2) _____ of it. But illness can come, even (3) ____ we are young. In fact, childhood has been a very susceptible time. Many diseases attack children in particular, and people know very little (4) ___ to cure them once they struck. The result was that many children died. About a century ago,(5) ______, scientists found out about germs, and then everything changed. The (6) _____ of many diseases was found, and cures were developed. As this medical discovery spread, the world became(7) ____ safer for children. The result is that (8) _____ a hundred years ago, the average man lived for 35 years, nowadays, in many areas of the world, people can (9) _____ to live for 75 years. And what do we expect by the year 2020 ? Undoubtedly, medical science will continue to (10) ________. Some people will be able to avoid medical problems that are unavoidable today

viết số hữ tỉ -7/18 dưới dạng sau đây : a tổng cảu hai phân số huuwx tỉ âm b hiệu của hai số hữu tỉ dương c tổng của hai số hữu tỉ âm trong ddood một số là -1/6 tính a 3/5 + ( -4/3) + _3/4) b ( -7/2 ) + ( -2/3 ) + ( -3/5 ) c 5/8 - ( -2/5 ) - 3/10 d 3/4 - [ ( -5/3 ) - ( 1/12 + 2/9 )]

tìm từ đồng âm và đặt câu với 2 từ sau:đồng hồ ,cái hồ

viết dàn ý bài văn tả cảnh buổi sáng trong công viên sau đó làm thành bài văn tả cảnh buổi sáng trong công viên cấm mọi hành vi copy ở trên mạng gấp giúp mik mik đang cần gấp

mọi người giúp mình với ạ 1. Helen knew her fear was * 1 điểm A. Logical B. Unreasonable C. Based on past experiences D. Quite common 2. Why hadn’t Helen learnt to swim when she was young? * 1 điểm A. She had always been terrified of water. B. She hadn’t had the opportunity. C. She had distrusted her instructor at school. D. The school pool had been too deep. 3. What happened the first time Helen had swimming lessons? * 1 điểm A. She didn’t get over her fears. B. She was afraid of the teachers. C. She managed to swim a reasonable distance. D. She nearly drowned. 4. How did Helen’s family react to her repeated effort to learn to swim? * 1 điểm A. They criticized her. B. They supported her. C. They were patient with her. D. They made fun of her. 5. At the Splash school, the instructors * 1 điểm A. Made her learn at the group’s pace B. Bullied her C. Didn’t rush her D. Explained her fears to her 6. Why did Helen go to a hypnotherapist? * 1 điểm A. She realized she would never be able to swim. B. She suddenly lost her courage. C. She suddenly forgot how to swim. D. She wanted to forget her past fears. 7. Which of these phrases best sums up the article? * 1 điểm A. Fear can be useful. B. Not everyone can do everything. C. You should never give up. D. Everyone is different.