Chapter 1, Problem 6Q

(a)

Interpretation Introduction

Interpretation:

The given amount in percentage has to be expressed in ppm.

Concept Introduction:

    $\begin{array}{c}1\%=1/100\\ \\ 1ppm=1/1000000\\ \\ 1ppm=0.0001\%\end{array}$

Explanation of Solution

Given concentration is $0.9\%.$

Therefore,

    $0.9partsperhundred\times \frac{{10}^{6}partspermillion}{100partsperhundred}=9ppm$

(b)

Interpretation Introduction

Interpretation:

The given amount in ppm has to be expressed in percentage.

Concept Introduction:

    $\begin{array}{c}1\%=1/100\\ \\ 1ppm=1/1000000\\ \\ 1ppm=0.0001\%\end{array}$

Explanation of Solution

Given concentration range for the air exhaled from the lungs of a smoker is 20-50 ppm.

Therefore,

    $\begin{array}{l}20ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.002\%\\ \\ 50ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.0050\%\end{array}$

Given concentration range for the air exhaled from the lungs of nonsmokers is 0-2 ppm.

Therefore,

    $2ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.0002\%$

(c)

Interpretation Introduction

Interpretation:

The given amount in ppm has to be expressed in percentage.

Concept Introduction:

    $\begin{array}{c}1\%=1/100\\ \\ 1ppm=1/1000000\\ \\ 1ppm=0.0001\%\end{array}$

Explanation of Solution

Given concentration is 50000 ppm.

Therefore,

    $\text{50000 }ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=5\%$

(d)

Interpretation Introduction

Interpretation:

The given amount in ppm has to be expressed in percentage.

Concept Introduction:

    $\begin{array}{c}1\%=1/100\\ \\ 1ppm=1/1000000\\ \\ 1ppm=0.0001\%\end{array}$

Explanation of Solution

Given concentration is 10 ppm.

Therefore,

    $\text{10 }ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.001\%$