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thanhhuong136
2 năm trước
Nung đá vôi theo phương trình CaCO3 nung nóng->CaO+CO2↑ . Lượng vôi sống (CaO) thu được là bao nhiêu khi nung 100 tấn đá vôi (CaCO3)? A. 46 tấn B. 56 tấn C. 50 tấn D. 60 tấn chỉ rõ cho mình được 20 điểm mà còn được 5 sao phải chỉ cách làm nha:))))))))))))
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