Question

2O means how many atoms ans molecules​

Answer 1

Answer:

2O denotes two seperate oxygen atoms. O2 is a molecule and thus it is stable. 2O, whichconsists of 2 different atoms and thus these 2 atoms are ready to combine with any other element like hydrogen. so,O2 is a molecule of element consisting of combination of 2 atoms of oxygen.

Explanation:

A mole (mol) is the amount of a substance that contains 6.02 × 10 23 representative particles of that substance. The mole is the SI unit for amount of a substance. Just like the dozen and the gross, it is a name that stands for a number. There are therefore 6.02 × 10 23 water molecules in a mole of water molecules