Chapter 2, Problem 4Q

(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 $0.934\%.$

Therefore,

$0.934partsperhundred\times \frac{{10}^{6}partspermillion}{100partsperhundred}=9340ppm$

(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 is 2 ppm.

Therefore,

$\begin{array}{l}2ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.0002\%\\ \\ 50ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.0050\%\end{array}$

(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 8500 ppm.

Therefore,

$\text{8500 }ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.85\%$

(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 8 ppm.

Therefore,

$\text{8 }ppm\times \frac{100partsperhundred}{{10}^{6}ppm}=0.0008\%$