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nguyenthiquynhtrang62
2 năm trước
Khí H2 được dùng làm nhiên liệu vì: A: Khí H2 cháy tỏa nhiều nhiệt. B: H2 kết hợp với O2 tạo ra nước. C: Phản ứng giữa H2 và oxit kim loại tỏa nhiều nhiệt. D: H2 là khí nhẹ nhất.
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