Yes, The Number of Moles is an Extensive Property. Along with Mass, Volume, Length, and Total charge.
Extensive properties have to do with the amount or size of a substance. Gold and copper samples can be made to have the same mass or the same volume, or the same number of moles, or atoms.
Its value will be reduced as the numbers of moles of the materials is reduced
a moles (b moles/a moles) = b moles
Enthalpy is an extensive quantity because an extensive quantity depends on the size of the molecule or the number of moles (how much of the molecule you have). Therefore think of a handful of gunpower vs. a storage room full of gunpower. Which reaction will have more enthalpy change? Yes, the room full of gunpower because there is more gunpowder in the reaction. This is an example of why enthalpy is an extensive quantity. Hope you understand now.
Ductile is an intensive property. An intensive property is independent of the amount of the substance present. Temperature , density , vapor pressure, and molar mass are examples of intensive properties. Extensive properties do depend upon the the amount of substance present. Extensive properties include mass, weight , moles , and standard cubic feet.
2 moles of Ca and 4 moles of OH
extensive
3.3 moles of K2S 3.3 moles of S-2 6.6 moles of K+1
Of course 6 moles.
there are 4.5 moles
3,7 moles of C8H11NO2 have 3,7 moles of oxygen (O2).