Write the equation according to the transformation scheme: Ca-CaO-Ca (OH) ₂-CaCO₃

The transformation chain looks like this:
1) 2Ca + O2 = 2CaO
2) CaO + H2O = Ca (OH) 2
3) Ca (OH) 2 + Na2CO3 = CaCO3 + 2NaOH



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