Which property of matter is conserved in chemical reactions and shown by balanced equations? mass
volume
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density
shape
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mass

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

For example in the balanced equation :

Thus in the reactants, there are 4 atoms of hydrogen and 2 atoms of oxygen.Thus there will be 4 atoms of hydrogen, and 2 atoms of oxygen in the product as well.

Thus there will be equal mass on both sides of the balanced equation.

In physics, displacement is a physical quantity that is used to describe the overall change in the position of an object/person.
In other words, it describes how far you are from your initial position.

In the given problem, the initial position is the same as the final position. This means that overall change in position is zero, which also means that the difference between the final and initial positions is zero.

Based on the above, the displacement is zero.