Question

Do you think one mole of the different substances has the same amount?​

Answer 1

It's because of Avagadro's number.

• It is known as Avagadro's constant too.
• It states that at constant temperature one mole of any substance contain same number of atoms i.e n no of atoms

where

$\\ \sf\longmapsto n=6.022\times 10^{23}$