[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. Cho 1,35 g hh A gồm Cu, Fe, Mg, Al td hết với dd HNO3 thu được 1,12 l (đktc) hh khí gồm No và NO2 có tỉ khối hơi so với hiđro là 16,6.
a) Tính khối lượng muối tạo thành sau PƯ.
b) Tính thể tích HNO3 0,5 M đã dùng.
2. Hòa tan hoàn toàn 19,2 gam kim loại M bằng dd HNO3 thu được 8,96 l (đktc) hh khí NO và NO2 có tỉ lệ thể tích 3:1. 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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