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Phuonglinh123
2 năm trước
Câu 1: Tính khối lƣợng Cu thu được khi khử 32 gam CuO bằng khí hidro A. 64 gam B. 76,8 gam C. 25,6 gam D. 19,2 gam Câu 2: Tính khối lượng nước thu được khi cho 13,44 lít khí hidro tác dụng với 8,96 lít khí oxi A. 10,8 gam B. 28,8 gam C. 14,4 gam D. 21,6 gam
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