Question

two substances that have the same number of moles of representative particles always have ?

Answer 1

If i understand your question, then the answer is yes.

A mole is a specific number (Avogadro's number, 6.022 x 10^23). If you have a mole of water molecules and a mole of sugar molecules, you have the same number of molecules (even if the samples have different overall masses).

It's like saying you have a dozen of something. I could have a dozen muffins or a dozen cars...obviously two very different things but I have the same NUMBER of each.