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Đốt cháy hoàn toàn 20kg một loại than chứa 72%C, 0.8%S. Còn lại là ạp chát không cháy a, Tính thể tích mỗi khí ( $CO_{2}$ và $SO_{2}$ ) sinh ra ( đktc) b, Xác định thể tích khí oxi đã tham gia phản ứng (đktc)
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