Question

Balance the above equation pls

Answer 1

It is already balanced. There is no need to add any more coefficients.

Proof:-

Ca atoms on both sides = 1

Carbon atoms on both sides = 1

Oxygen atom on both sides = 4

Hydrogen atoms on both sides = 2

P.S. : You have to multiply O and H on Left Hand Side with 2 (whenever there is a bracket, you multiply number of atoms of the substance in the bracket with the number outside the bracket.)