Q: Write the balanced, net ionic equation corresponding to the unbalanced equation:

CaCl2 + Na2CO3     ->     CaCO3 + NaCl

    Ca2+ (aq) + 2Cl- (aq) + 2Na+ (aq) + CO32­ (aq)   ->   Ca2+ (aq) + CO32­ (aq) + 2Cl- (aq) + 2Na+ (aq)

    Ca2+ (aq) + 2Cl- (aq) + 2Na+ (aq) + CO32­ (aq)     ->     CaCO3 (s) + 2Cl- (aq) + 2Na+ (aq)

A:     Ca2+ (aq) + CO32­ (aq)     ->     CaCO3 (s)