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ca oh 2 + co2 → caco3 + h2o
ca oh 2 + co2 + h2o
ca oh 2 co2 → caco3 h2o
ca oh 2 + co2 caco3
ca oh 2·h2o
co2+ca oh 2 caco3+h2o
ca oh 2+o2
ca+h2o ca oh 2+h2
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