1 mole = 6.02 x 10²³ particles
A mole of any substance contains a fixed and very large number of particles, known as Avogadro’s constant. Avogadro’s constant is approximately equal to 6.02 x 1023 particles, which can be tiny particles such as atoms or molecules.
Molar mass = mass of 1 mole of a substance
Molar mass is a measure of the mass of one mole of a substance and is typically expressed in grams per mole (g/mol)
Moles = Mass / Molar Mass
To find the number of moles of a substance, simply divide the mass (g) by the molar mass (g/mol) to find the number of moles.
1 mole = number of atoms in 12 g of carbon
Scientists picked a special type of carbon and said that if you have 12 grams of it, you have about 602,200,000,000,000,000,000,000 carbon atoms! This idea helps scientists measure how heavy atoms are and count them easily.
A mole-to-mole ratio, often simply called a mole ratio, is an idea that relates the number of moles of one substance to the number of moles of another substance in a chemical reaction.