Respuesta :

Answer:

2HCI

Explanation:

The coefficient needed to balance the chemical reaction is a number and it is 2.

Balanced chemical reaction

The balanced chemical reaction is determined as follows;

CaCl2 + H2CO3  → CaCO3 + Hcl

Coefficient needed to balance the chemical reaction

The coefficient needed to balance the chemical reaction is a number and obtained as follows;

CaCl2 + H2CO3  → CaCO3 + 2Hcl

The coefficient is 2

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