What is meant by saying that 'the molecular mass of oxygen is `32`'?

What is the molecular mass of oxygen?

(a) Define atomic mass unit. What is its symbol ? (b) Define atomic mass of an element. (c ) What is meant by saying that 'the atomic mass of oxygen is 16 ' ?

what is meant by saying that metals are sonorous ?

What is meant by saying that the molality of a solution is 0.1?

What is meant by mass defect?

What is meant by abnormal molecular mass of solute?

What is meant by saying that 'air expands on heating'?

What is meant by saying that the electric potential at a point is Ivolt?