Chapter 3, Problem 39E

Interpretation Introduction

Interpretation:

The element X needs to be determined.

Concept introduction:

The mass percentage of any species in the given compound can be calculated as follows:

$\%m=\frac{M}{M_{\text{compound}}}\times 100\%$

Here, M is molar mass of the species and $M_{\text{compound}}$ is the molar mass of compound.

The mass of a substance can be calculated from number of moles as follows:

$m=n\times M$

Here, M is molar mass of the substance.