Question

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

Answer 1

Answer: 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 $6.023\times 10^{23}$ 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 $6.022\times 10^{23}$.

$1mole=6.022\times 10^{23}$ particles