[Học Để Thi] New comment on Tuyển tập những bài tập Hóa Học Hay.

Trang Ánh Nam has left a new comment on your post "Tuyển tập những bài tập Hóa Học Hay":

bài 1,hòa tan hoàn toàn 8,862 g hỗn hợp gồm Al và Mg vào dung dịch HNO3 loãng , thu đc dung dịch X và 3,136 lít (ở đktc) hỗn hợp Y gồm 2 khí không màu , trong đó có một khí hóa nâu ngoài không khí
Khối lượng của Y là 5, 18 g. Cho dung dịch NaOH (Dư) vào X và đun nóng , không có khí mùi khai thoát ra .Tính phần trăm khối lượng của 2 kim loại trong hỗn hợp ban đầu?

bài 2,cho 2,16g Mg tác dụng với dung dịch HNO3( dư) Sau khi phản ứng xảy ra hoàn toàn thu đc 0,896 l khí NO (ở đktc) và dung dịch X. Tính khối lượng muối khan thu đc khi làm bay hơi dung dịch X?

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Posted by Trang Ánh Nam to Học Để Thi at December 7, 2018 at 2:59 PM

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