đốt cháy toàn bôh hỗn hợp khí gồm CO VÀ H2 cần dùng 4,8 gam khí oxi.khí sinh ra có 4,4 gam CO2.thành phần trăm theo thể tích của CO và H2 trong hỗn hợp ban đầu lần lượt là: 87,5% và 12,5% 33,33% và 66,67% 66,67% và 33,33% 50 % và 50%

Các câu hỏi liên quan

Giúp e bài này lấy 10đ + link lấy thêm 5 đ nè ( link chỉ dành cho người đầu tiên trả lời) Exercise 1:Rearrange the sentences. You can not change the words.Here is an example. 0.There/library/many/the/books/are/in/.Answer: 0.There are many books in the library. 1.I/Tuesdays/on/English/study/._________________________________________________________ 2.What/you/are/at/looking/?_________________________________________________________ 3.Does/drive/your/you/mother/to school/?_________________________________________________________ 4.The/are/right now/students/playing/.________________________________________________________ 5.They/are/on/playground/playing/the/games/._________________________________________________________ Exercise 2: Choose the word with a different way of pronunciation in the underlined part. Circle A, B or C. 1.A. picturesB. chairsC. desks 2.A. vasesB. dishesC. tables 3.A. booksB. keysC. pots 4.A. lampsB. schoolsC. bags 5.A. pencilsB. basketsC. rulers Exercise 3:For each question, complete the second sentence so that it means the same as the first. Use the word in brackets. You may need to change the word. Write NO MORE THAN THREE WORDS 1.What is your plan for tonight?What are you __________________? (DO)2.Josh talks a lot in class.Josh __________________. (TALKATIVE)3.She is a girl with long hair.She __________________. (HAVE)4.Her eyes are black.She __________________. (HAVE)5.He often makes people laugh.He is a __________________. (BOY)