a,b,c,d,e là các chất trong số sau:nacl,na2s,na2so3,na2so4,ki,kclo3 biết rằng -a và b pư vs h2so4 loãng tạo ra khí có mùi -a tạo kết tủa khi pư vs dd cucl2 -chất c pư vs dd fecl3,thì dd sau pư tiếp xúc vs hồ tinh bột sẽ hóa xanh -d tạo kết tủa trắng khi pư với đ bacl2 -e tác dụng với dd axit hcl tạo khí cl2 hãy xác định a,b,c,d,e và viết pt phản ứng

Vẽ những trái bơ = màu cước, ai đẹp nhất đc Câu trả lời hay nhất

IX Read the passage and write True (T) or False (F). There are a lot of benefits to have a robot in your house. Firstly, robots are useful. They can help us save a lot of time and energy. They help us do our housework such as cooking, doing laundry, feeding the babies and doing gardening as well. Besides, robots can help people protect their house by sending strange noise and signals for help. They never get bored, tired or complain anything about the hardship when they do too many things. However, the price for buying a robot is so high. It is so expensive that only rich families can buy it. 1. There is no benefit when having a robot. 2. Robots help you do your housework except feeding the babies. 3. They can guard your house and protect your house. 4. Robots are easy to get tired when doing too many things. 5. It is not cheap for people to buy a robot for their family.

Giải giúp e câu này vs ạ e cảm ơn Phép tịnh tiến

Mong mn giúp mấy bài này ;-; B1: Rút gọn biểu thức: a, $(a + b + c)^{3}$ - $(b + c - a)^{3}$ - $(a + c - b)^{3}$ - $(a + b - c)^{3}$ b, $(a + b)^{3}$ + $(b + c)^{3}$ + $(a + c)^{3}$ - 3 (a + b) (b + c) (c + a) B2: CMR nếu ($a^{2}$ + $b^{2}$ + $c^{2}$) ($x^{2}$ + $y^{2}$ + $z^{2}$) = $(ax + by + cz)^{2}$ với x, y, z khác 0 thì $\frac{a}{x}$ = $\frac{b}{y}$ = $\frac{c}{z}$ B3: Cho $(a+b)^{2}$ = 2($a^{2}$ + $b^{2}$). CMR a = b

Ai giúp em câu trả lời với ạ, em đang gấp ạ Viết đoạn tầm 10-12 dòng ạ

He always ________ for a walk in the evening. A. is going B. goes C. going D. go

giúp mình vs ạ cảm ơn chước nghe mình cần gấp trong vòng 8p nhe

VIII Find the mistakes and correct: 1. A robot can builds houses, apartments and offices. A B C D 2. Scientists are working on how to invent a intelligent robot. A B C D 3. The children can work in groups when they were at school yesterday. A B C D 4. Children couldn’t stayed at home alone when they were 5 years old. A B C D 5. I don’t agree of you that a robot will be able to understand what people say. A B C D

vẽ anime nữ tâm trạng buồn , khóc NL: áp lực.......