N(V2)=1,5 моль

To calculate the amount of substance in moles (n) using the volume (V) in liters, you can use the formula:

n = V / Vm

Where Vm is the molar volume, which represents the volume occupied by one mole of a substance at a specific temperature and pressure. The value of Vm depends on the substance.

However, since you have only provided the volume (V2) and the amount of substance in moles (n(V2)), we cannot calculate the molar volume accurately without additional information.

If you provide the molar volume or any relevant information, I can help you with the calculation.