How many molecules are in 63.6 g n2?

The mole (symbol: mol) is the base unit of amount of substance in the International System of Units (SI). It is defined as exactly 6.02214076×1023 particles, which may be atoms, molecules, ions, or electrons. If you want to know how many moles of a material you have, divide the mass of the material by its molar mass. The molar mass of a substance is the mass in grams of one mole of that substance.

Calculating the number of particles...

1.The number of particles in a substance can be calculated using:

2.Number of particles = Avogadro constant × the amount of substance in mol.

3.Calculate the number of water molecules in 0.5 mol of water.

4.Number of water molecules = Avogadro constant x amount of substance in mol.