   # In a lab experiment you measure a gas pressure of 120 mm Hg. This pressure in units of kPa is approximately (a) 12 kPa (b) 16 kPa (c) 900 kPa ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 10.1, Problem 1RC
Textbook Problem
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## In a lab experiment you measure a gas pressure of 120 mm Hg. This pressure in units of kPa is approximately (a) 12 kPa (b) 16 kPa (c) 900 kPa

Interpretation Introduction

Interpretation:

The pressure given should be converted into kilopascals and to be identified from given options.

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

### Explanation of Solution

Given the value of pressure as 120mmHg

The general conversion is:

1atm=760mmHg=101.325kilopascals

Conversion into kilopascals:

120mmHg×101.3kPa760mmHg=16kPa

Hence, the correct option is (b)

(a)

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