In every balanced chemical equation, each side of the equation has the same number of a) moles b) coefficients c) molecules d) atoms of element

The correct answer is option d, that is, atoms of the element.  

As the atoms are neither destroyed nor created in a chemical reaction, the sum of the mass of the products in a reaction must be equivalent to the sum of the mass of the reactants.  

The chemical reactions must be balanced, they must exhibit a similar number of atoms of each element on both the sides of the equation. As a consequence, the mass of the reactants must be equivalent to the mass of the products of the reaction.  

In every balanced chemical equation, each side of the equation has the same number of atoms of element

The correct answer to the question is Option D. atoms of element

Balancing a chemical equation requires an understanding of the law of conservation of matter.

The law of conservation of matter states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

The above statement implies that every balance equation must have the same number of atoms of the different elements present on both sides of the equation.

With the above information in mind, we can conclude that In every balanced chemical equation, each side of the equation has the same number of atoms of element.

Thus, the correct answer to the question is Option D. atoms of element

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your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.