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Bài 36: Nước
\(CaC{O_3}\buildrel {{t^o}} \over\longrightarrow CaO + C{O_2} \uparrow \)
\(CaO + {H_2}O \to Ca{(OH)_2}\)
\(C{O_2} + Ca{(OH)_2} \to CaC{O_3} \downarrow + {H_2}O\)
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