Which of the following best defines one mole of a substance?

a. mass, in grams, of each particle of the substance.
b. mass, in grams, of the nuclear us of the substance’s atoms.
c. amount of substance present in one atom of the substance
d. amount of substance present in avogadro‘s number of particles of the substance

D. Amount of substance present in Avogadro‘s number of particles of the substance

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 Liters at STP, contains avogadro's number of particles and weighs equal to the molecular mass of that substance.

A mole is defined as the amount of substance that contains Avogardro number of the substance. Avogadro's number is given by .

particles

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.