Answer: 2NaHCO3 + CaCl2 > 2NaCl + CaCO3 + CO2 + H2O
Step-by-step explanation:
It seems like your equation is balanced, but I'll explain how:
Unbalanced: NaHCO3 + CaCl2 > CaCO3 + NaCl + CO2 + H2O
The best ones to balance first are the ones that aren't C, H, or O
Balance Na:
Since there is 1 Na on the reactants and one on the products, we're fine now.
Balance Ca
That is also fine for now.
Balance Cl
Since there are 2 Cls on the reactants, you need 2 Cls on the products. The only product with Cl is NaCl, and since you have two, multiply the NaHCO3 and the NaCl by 2, since that way, it can be balanced with the CaCl2
Now, our equation is 2NaHCO3 + CaCl2 > 2NaCl + CaCO3 + CO2 + H2O
Balance C:
There are 2 Cs on the product, and 2 on the reactants, so that's fine.
Balance H:
There is one on both sides, so that's fine
Balance O:
There are 6 on both sides, so that's fine.
Your equation is balanced.