Chapter 2.2, Problem 17PP

Interpretation Introduction

(a)

Interpretation:

Two conversion factors for 16% (by mass) salt solution is to be given.

Concept introduction:

An arithmetical multiplier used for conversion of a quantity in one unit to another is known as a conversion factor.

Answer to Problem 17PP

$\frac{16g}{100gsolution};\frac{100gsolution}{16gsalt}$

Explanation of Solution

Salt solution is a solution of any salt but mainly isotonic salt or which has physiologic sodium chloride solution.

Two conversion factors for 16% (by mass) salt solution is $\frac{16g}{100gsolution};\frac{100gsolution}{16gsalt}$

(b)

Interpretation Introduction

Interpretation:

Two conversion factors for a density of 1.25 g/mL is to be given.

Concept introduction:

An arithmetical multiplier used for conversion of a quantity in one unit to another is known as a conversion factor.

Answer to Problem 17PP

$\frac{1.25g}{1mL};\frac{1mL}{1.25g}$

Explanation of Solution

Density is the amount of mass per unit volume. Common unit of density for solids is grams per cubic centimeter $(g/c{m}^3)$ and for liquid and gases it is grams per milliliter (g/mL).

Two conversion factors for a density of 1.25 g/mL is $\frac{1.25g}{1mL};\frac{1mL}{1.25g}$

(c)

Interpretation Introduction

Interpretation:

Two conversion factors for a speed of 25 m/s is to be given.

Concept introduction:

An arithmetical multiplier used for conversion of a quantity in one unit to another is known as a conversion factor.

Answer to Problem 17PP

$\frac{25m}{1s};\frac{1s}{25m}$

Explanation of Solution

Speed is the rate at which an object covers distance in the given amount of time. An object that moves fast is said to have high speed and will cover greater distance than the object that moves slow and is said to have slow speed, in the same amount of time.

Two conversion factors for a speed of 25 m/s is $\frac{25m}{1s};\frac{1s}{25m}$.