chemistry

CaCl2(aq)+ NaHCO3(aq) =CO2(g)+ CaCO3(aq)+ NaCl(aq) +H2O(l)

could some one explain to me how to balance the equation?
please

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  1. two C on the right, so add a two on the left

    CaCl2 + 2 NaHCO3 -->
    ... CO2 + CaCO3 + 2 NaCL + H2O

    add a two on the right to balance Na

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  2. thank you

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