[Học Để Thi] New comment on Bảo toàn mol electron.

Vua Hài Kịch has left a new comment on your post "Bảo toàn mol electron":

Cho khí CO đi qua Fe2O3 đốt nóng, ta được m gam hỗn hợp rắn X gồm 4 chất. Hỗn hợp rắn X đem hòa vào HNO3 đậm đặc nóng dư, nhận được 2,912 lít NO2( dkc) và 24,2gam Fe(NO3)3 khan.Vậy m có giá trị:
A. 8,36g B. 5,68g C.7,24g D. 6,96g

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Posted by Vua Hài Kịch to Học Để Thi at December 15, 2018 at 9:31 AM

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