Question

define molecules, moles ans avogadro's constant.

need it asap

Answer 1

Avogadro constant (named after the scientist Amedeo Avogadro) is thenumber of constituent particles, usually atoms or molecules, that are contained in the amount of substance given by one mole.
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
A mole corresponds to the mass of a substance that contains 6.023 x 1023particles of the substance.

The mole is the SI unit for the amount of a substance and its symbol is mol.

By definition: 1 mol of carbon-12 has a mass of 12 grams and contains 6.022140857 x 1023 of carbon atoms .