I would see chemical constitution and physical components are not changed.
Because physical reaction won't change the component itself
The subscript 2 in the formula o2 indicates that there are 2 atoms of the element oxygen, represented by the symbol "O." The subscript to the right of the symbol tells how many atoms are present of that element.
X,,s,smells,s,wow,masks,as,mw
There are 1.27 moles in the compound.
