cho 11,9 ga hỗn hợp gồm al , mg , fe tác dụng vừa đủ v lít dd hno3 1M. Sau phản ứng thu được 6,72 lít (đktc) gồm no & n2 co D hh/H2 = 43/3 và trong dd X có 0,05mol nh4no3. cô cạn dd X thu m g muối khan . hỏi giá trị V và m là bao nhiêu ?

Các câu hỏi liên quan

toàn trắc nghiệm thôi ae ơi Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A: popular B: noisy C: crowded D: convenient 21 Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. Question 13. Question 13. Peter is talking to Mary. Peter: “ Would you like to go to the movies?” Mary: “ ________________________”. A: That’s very kind of you B: You are welcome. C: Yes. I’d love to. D: Yes, I like. 22 choose the correct sentence A, B, C or D. A: City children play freely on the street because of crowded traffic. B: City children play freelier on the streets because of crowded traffic. C: City children play less freely on the streets because of crowded traffic. D: City children play more freely on the streets because of crowded traffic. 23 Mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 7. I wonder who live ________ , country folk or city people? A: more happier B: happilier C: happier D: more happily 24 Mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 12. Be quiet! The baby ____________ . A: are sleeping B: is sleeping C: isn’t sleeping D: aren’t sleeping 25 choose the correct sentence A, B, C or D. A: In the countryside, the life style is less faster than the life style in cities. B: In the countryside, the life style is more faster than the life in cities. C: In the countryside, the life style is not so fast as the life style in cities. D: In the countryside, the life style is faster than the life style in cities.