   Chapter 10, Problem 1PS

Chapter
Section
Textbook Problem

Pressure(See Section 10.1 and Example 10.1.)The pressure of a gas is 440 mm Hg. Express this pressure in units of (a) atmospheres, (b) bars, and (c) kilopascals.

(a)

Interpretation Introduction

Interpretation:

The pressure given should be converted into the units of atmosphere.

Concept Introduction:

Pressure=ForceArea

Pressure can be expressed in different units. But it is normally reported in mmHg(millimetersofmercury)

General unit conversions:

1atm=760mmHg1pascal=1newton/meter21atm=760mmHg=101.325kilopascals=1.01325bar1bar=1×105pascal

440mmHg=0.578atm

Explanation

The given pressure are in the units of atmosphere

Given the value of pressure as 440mmHg

Conversion into atm:

1atm=760mmHg440mmHg×1atm760mmHg=0.578atm

(b)

Interpretation Introduction

Interpretation:

The pressure given should be converted into the units of bars.

Concept Introduction:

Pressure=ForceArea

Pressure can be expressed in different units. But it is normally reported in mmHg(millimetersofmercury)

General unit conversions:

1atm=760mmHg1pascal=1newton/meter21atm=760mmHg=101.325kilopascals=1.01325bar1bar=1×105pascal

440mmHg=0.586bar

Explanation

The given pressure are in the units of bar

Given the value of pressure as 440mmHg

Conversion into bar:

440mmHg×1.013bar760mmHg=0.586bar

(c)

Interpretation Introduction

Interpretation:

The pressure given should be converted into the units of kilopascals.

Concept Introduction:

Pressure=ForceArea

Pressure can be expressed in different units. But it is normally reported in mmHg(millimetersofmercury)

General unit conversions:

1atm=760mmHg1pascal=1newton/meter21atm=760mmHg=101.325kilopascals=1.01325bar1bar=1×105pascal

440mmHg=58.6kPa

Explanation

The given pressure are in the units of kilopascals.

Given the value of pressure as 440mmHg

Conversion into kilopascals:

440mmHg×101.3kPa760mmHg=58.6kPa

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