The reaction that demonstrates the law of conservation of mass is Option A.
What is the law of conservation of mass?
According to the law of the conservation of mass, mass can neither be created nor destroyed but is changed from one form to another. This implies that the total mass before reaction must be equal to the total mass after reaction.
With this in mind, we can now examine the masses of the species on the left and the right in order to ascertain which of the reaction was carried out in obedience to the law of the conservation of mass.
The reaction that demonstrates the law of conservation of mass is Option A.
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