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what is the difference between moles and molecules?

A mole is simply a number or a quantity. A mole is 6.023 x 10²³ number of atoms, molecules or some other count of items.

for eg: A mole of hydrogen atoms means that there are 6.023×10²³ hydrogen atoms.

A molecule is several atoms bonded together. For example, hydrogen (H) and Oxygen (O) are atoms, but H₂0 (two hydrogen and one oxygen) is a molecule.

Mole may consists of 6.023×10²³ no. of molecules.