Chapter 4, Problem 3CE

Interpretation Introduction

(a)

Interpretation:

The simple average mass of the marbles is to be calculated.

Concept introduction:

The simple average mass is calculated by adding two masses together and divide by $2$. Each element has a definite number of protons in its nucleus. The number of protons present in the atomic nucleus is known as atomic number. The mass number is the sum of total number of protons and neutrons.

Interpretation Introduction

(b)

Interpretation:

The weighted average mass of the marbles is to be calculated

Concept introduction:

The simple average mass is calculated by adding two masses together and divide by $2$. Each element has a definite number of protons in its nucleus. The number of protons present in the atomic nucleus is known as atomic number. The mass number is the sum of total number of protons and neutrons.