Explanation:
In first one it should be 2Mg
and in second = 2Mgo
hope it helps....
NH3(g) will take the shape of and completely fill a closed 100.0 milliliter container.
The existence of an atom was first suggested by Democritus, the idea is then developed in 1803 by John Dalton.
According to Dalton's atomic theory, matter is made up of atoms which are inseparable and can not be destroyed further. For a given element, all atoms have identical mass and properties. Atoms of two different elements combine to form compounds and rearrangement of these atoms results in chemical reaction.
