Chapter 2, Problem 101E

Interpretation Introduction

Interpretation:

The importance of defining one mole as the number of particles as exactly $\text{12}\text{g}$ of $\text{C-12}$ and $\text{amu}$ as the $1/12$ mass of an atom of $\text{C-12}$. The result of defining one mole as the number of particles as exactly $\text{12}\text{g}$ of $\text{C-12}$ and $\text{amu}$ with respect to $\text{Ne-20}$ is to be explained.

Concept introduction:

The number of atoms in 0.012 kg of carbon is known to be Avogadro’s number. One mole is the number of atoms present in 15.9949 g of oxygen-16, but the problem arises in determining the mass of O-16 whereas in case of carbon the mass is defined to exact 12 g.