Chapter 1, Problem 1.78P

Interpretation Introduction

Interpretation:Total mass of oxygen, silicon, ruthenium and rhodium is to be determined.

Concept introduction:Density is defined as mass per unit volume. It is denoted by $d$ . The expression to calculate density is as follows:

  $d=\frac{M}{V}$

Where,

• $d$is the density.
• $M$is mass.
• $V$is volume.

The formula to calculate mass of element is as follows:

  $m=aM$

Where,

• $m$is mass of element.
• $a$is abundance of element.
• $M$ismass of earth’s crust.