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Answer:

A mole in chemistry is defined as the number or quantity of a chemical substance that consists of as many fundamental entities such as atoms, molecules, and ions. Therefore, the statement that best describes a mole is that, it is used for directly comparing the amounts of substances.

Explanation:

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Th statement which describes a way in which moles is useful is that it can be used to keep track of chemical amounts.

What is mole?

Mole is unit to calculate the amount of chemical substances and it is represented as:
n = W/M, where

W = given mass

M = molar mass

It can be useful in chemical reactions to calculate the relative amount of species present before and after the reaction. In one mole of substance 6.022 × 10²³ atoms of that substance is present.

Hence, option (A) is correct.

To know more about Mole, visit the below link:
https://brainly.com/question/1464305

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