The "mole" is an entirely equivalent quantity to a "dozen".
A mole of something, atoms, molecules, electrons, eggs, SPECIFIES a quantity of 6.022xx10^23 INDIVIDUAL ITEMS of that something. Chemists often use the symbol the symbol N_A to represent the so-called "Avogrado's number".............
So, let's assess the number of particles in 6 dozen H_2S molecules. Clearly, there are 144 hydrogen atoms, and 72 sulfur atoms. Agreed?
So if there are is a 6*mol quantity there are 12xxN_A hydrogen atoms, and 6xxN_A sulfur atoms.
And given that N_A ""^1H atoms has a mass of 1*g, and a mass of N_A ""^32S is 32*g, we can use the mole as the link between the micro world of atoms and molecules, with the macro world of grams, and litres....those quantities we can measure in a laboratory.