[Trang Ánh Nam] New comment on Công thức giải nhanh hóa học.

Nam Trang Ánh has left a new comment on your post "Công thức giải nhanh hóa học":

Câu 10: Đốt hỗn hợp A gồm 5,6 gam Fe và 6,4 gam Cu trong không khí, sau một thời gian thu được hỗn hợp B nặng 13,6 gam. Hòa tan hoàn toàn hỗn hợp B trong dung dịch HNO3 dư thu được V lít khí NO (đktc) sản phẩm khử duy nhất. gá trị của V là.
a. 4,48 lít ................................. b. 2 lít ............................ c. 2,24 lít ......................... d.3 lít


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Posted by Nam Trang Ánh to Trang Ánh Nam at January 6, 2019 at 10:20 AM

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