Question

How many no of atoms present in 16g of O.

Answer 1

In chemistry, every element has its respective atomic masses. In this case 16 is the atomic mass of oxygen. Also, it is told that if any element is found in the same quantity as its atomic mass, then it is said that 1 mole of that element is present i.e. if 16 gms of oxygen is present, then we can say that 1 mole of oxygen is present. Similarly, if 8 gms of oxygen is present, then we can say that 0.5 moles of oxygen is present.

Answer 2

1 Atom of Oxygen is present