Chapter 3.1, Problem 6RQ

(a)

Interpretation Introduction

Interpretation: The fourth most abundant element by mass in the human body needs to be determined.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 6RQ

The element is nitrogen.

Explanation of Solution

The names of the chemical elements have come from many sources. The names of elements come from descriptions of the element’s properties and also, it reflects the place where the element was discovered or it honors a famous scientist.

According to the graph, the fourth most abundant element is the color white on the chart which corresponds to nitrogen.

(b)

Interpretation Introduction

Interpretation: The name of an element that is almost twice as abundant by mass as hydrogen in the human body needs to be determined.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 6RQ

Carbon $\text{18\%}$ is almost twice as abundant as hydrogen, $\text{10\%}$ .

Explanation of Solution

The names of the chemical elements have come from many sources. The names of elements come from descriptions of the element’s properties and also, it reflects the place where the element was discovered or it honors a famous scientist.

According to the graph, carbon $\text{18\%}$ is almost twice as abundant as hydrogen which is only $\text{10\%}$

(c)

Interpretation Introduction

Interpretation: Percentage of the human body is not made up of oxygen, carbon, or hydrogen needs to be determined.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 6RQ

Oxygen, carbon, hydrogen, made up $\text{93\%}$ respectively, therefore, the remaining elements make up $\text{7\%}$ .

Explanation of Solution

The names of the chemical elements have come from many sources. The names of elements come from descriptions of the element’s properties and also, it reflects the place where the element was discovered or it honors a famous scientist.

According to the graph, oxygen, carbon, hydrogen, made up $\text{93\%}$ respectively, therefore, the remaining elements make up $\text{7\%}$ .