Textbook Problem

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Chemical Formulas

Determine the number of each type of atom in each chemical formula:

$\begin{array}{l}\text{a}{\text{. CaF}}_{\text{2}}\hfill \\ \text{b}{\text{. CH}}_{\text{2}}{\text{Cl}}_{\text{2}}\hfill \\ \text{c}{\text{. MgSO}}_{\text{4}}\hfill \\ \text{d}\text{. Sr}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\hfill \end{array}$

Interpretation Introduction

Interpretation:

The number of each type of atom in the given chemical formula is to be determined.

Concept Introduction:

A compound is represented by a chemical formula, which gives the information about the elements present in that compound and the relative number of atoms contained in that compound.

In a compound, the atoms are contained in a fixed proportion, and to represent those proportions, chemical formula is used.

Explanation of Solution

a) ${\text{CaF}}_2$

The compound ${\text{CaF}}_2$ cal