K
khoavip1


18,5g hon hop X=Fe,Fe3O4 vao 200ml HNO3 loang nong phan ung xay ra hoan toan thu duoc 0,1mol NO dung dich Y va con lai 1,46g kiml loai
khoi luong muoi va nong do mol HNO3
khoi luong muoi va nong do mol HNO3