Giúp mình bài 8 với ạ Mình cảm ơn
Dẫn 11,2 lít hỗn hợp khí X gồm axetilen và propin vào dung dịch AgNO3/NH3 dư (các phản ứng xảy ra hoàn toàn), sau phản ứng thu được 92,1 gam kết tủa. Phần trăm số mol axetilen trong X là
Các bạn giúp mình với,làm trên giấy rồi chụp lại nhé.cảm ơn
Câu hỏi: Theo em, câu văn nào thể hiện rõ nhất tinh thần cơ bản của văn bản “Tinh thần yêu nước của nhân dân ta”? Hãy xác định bố cục và đặt tên cho từng đoạn? *P/s: Em đg cần gấp, mọi người giúp e với, ai làm đúng e sẽ cho 20 điểm, e xin cảm ơn! ^_^
Cho ∆ABC có AB = 6cm; AC = 8cm; BC = 10cm. a/ Chứng minh ∆ABC vuông. b/ Kẻ phân giác BD; CE ( D thuộc AC; E thuộc AB). BD và CE cắt nhau tại I. Tính số đo
Giúp em lẹ nhé em cần gấp lắm ạ, em sẽ cho thêm điểm ạ, em cảm ơn trước<333
Giải giúp mình với ạ ....! Cảm ơn ạ!
Tính ( chỉ lấy đến hai chữ số ở phần thập phân của thương ) a, 28 ÷ 5,2 b, 246,85÷12,4 c, 4072 ÷57 d, 45,6 ÷ 1,23
Giải mình các câu này với ạ, mình tick cho ạ
1. Fill in : so, such or such a: Yesterday Peter put his dinner in the oven to cook. It was ..... nice day that he decided to mow the lawn while he was waiting. It was .... hard work and took ..... long time that his dinner began to burn, but he was.... busy in the garden that he didn't notice the smell. As he was working, he heard a fire engine arrive, and he went to the front of his house. His neighbor said, " Peter, there was .... bad smell and .... much smoke that we thought your house was on fire. We were .... worried that we called the fire brigade. " Peter had.... shock ! He ran into the kitchen, but the oven was .... hot that he couldn't touch it. The fireman had sprayed it with .... much water that the kitchen was wet all over. Finally, everybody went home. Peter was left with akitchen thay was .... mess and a dinner that was ... burnt that he decided never to cook and mow the lawn at the same time again. 2.Fill in : which or whose : Broadstairs, ..... is a town on a south coast of England, is famous for its Dickens Festival .... is held every June. Dickens, .... first name was Charles, was a famous English writer .... most famous books are" A Christmas Carol " and " Oliver Twist". "A Christmas Carol ", .... is about a mean man .... life is changed by the visits of three ghosts, has been made into several films..... are often shown at Christmas on TV. Another one of his novels is called " Bleak House", .... is actually the name of the house in .... Dickens lived in Broadstairs. The people of Broadstairs all love the festival,..... brings a lot of money to the town and is fun for everyone. I'm sure Dickens, .... life and books are celebrated, would have loved it too.
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