[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":

1. Nung m gam bột sắt trong oxi, thu được 3g hh X. Hòa tan hoàn toàn X vào dd HNO3 dư thu được 0,56 l khí NO(đktc). Xác định m.
2. Nung m gam bột sắt trong kk thu được hh X gồm sắt và các oxit sắt có khối lượng 104,8 g. Hòa tan hoàn toàn X vào dd HNO3 dư thu được 12,096 l hh khí NO và NO2 (đktc). Tỉ khối hơi của hh so với He là 10,167. Xác định m.

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Posted by Vua Hài Kịch to Học Để Thi at December 15, 2018 at 9:24 AM

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