Student Solutions Manual for Zumdahl/DeCoste's Introductory Chemistry: A Foundation, 9th
Student Solutions Manual for Zumdahl/DeCoste's Introductory Chemistry: A Foundation, 9th
9th Edition
ISBN: 9781337399470
Author: ZUMDAHL, Steven S.; DeCoste, Donald J.
Publisher: Cengage Learning
Question
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Chapter 10, Problem 25QAP
Interpretation Introduction

(a)

Interpretation:

Convert 75.2 kcal to joules and kilojoules.

Concept Introduction:

A conversion factor is a numerical ratio which is used to show a measurement in one unit as another unit. It is always equal to 1.

Expert Solution
Check Mark

Answer to Problem 25QAP

75.2 kcal = 314.6368 kJ and 314636.8 J.

Explanation of Solution

The given conversion is: conversion of kilocalories to joules and kilojoules.

1 kilocalorie is equal to the 4184 joules and 4.184 kilojoules.

1 kcal = 4184 J and 1 kcal = 4.184 kJ

Thus, conversion factor is given by:

4184 J1 kcal and4.184 kJ1 kcal

So,

75.2 kcal

=4.184 kJ1 kcal×75.2 kcal=314.6368 kJ

75.2 kcal

=4184 J1 kcal×75.2 kcal=314636.8 J.

Interpretation Introduction

(b)

Interpretation:

Convert 75.2 cal to joules and kilojoules.

Concept Introduction:

A conversion factor is a numerical ratio which is used to show a measurement in one unit as another unit. It is always equal to 1.

Expert Solution
Check Mark

Answer to Problem 25QAP

75.2 cal = 314.6368 J and 0.3146368 kJ.

Explanation of Solution

The given conversion is: conversion of calories to joules and kilojoules.

1 calorie is equal to the 4.184 joules and 0.004184 kilojoules.

1 cal = 4.184 J and 1 cal = 0.004184 kJ

Thus, conversion factor is given by:

4.184 J1 cal and0.004184 kJ1 cal

So,

75.2 cal

=4.184 J1 cal×75.2 cal=314.6368 J

75.2 cal

=0.004184 kJ1 cal×75.2 cal=0.3146368 kJ.

Interpretation Introduction

(c)

Interpretation:

Convert 1.41×103 cal to joules and kilojoules.

Concept Introduction:

A conversion factor is a numerical ratio which is used to show a measurement in one unit as another unit. It is always equal to 1.

Expert Solution
Check Mark

Answer to Problem 25QAP

1.41×103 cal = 5.899×103 J and 0.005899×103 kJ.

Explanation of Solution

The given conversion is: conversion of calories to joules and kilojoules.

1 calorie is equal to the 4.184 joules and 0.004184 kilojoules.

1 cal = 4.184 J and 1 cal = 0.004184 kJ

Thus, conversion factor is given by:

4.184 J1 cal and0.004184 kJ1 cal

So,

1.41×103 cal

=4.184 J1 cal×1.41×103 cal=5.89944×103 J

1.41×103 cal

=0.004184 kJ1 cal×1.41×103 cal=0.005899×103 kJ.

Interpretation Introduction

(d)

Interpretation:

Convert 1.41×103 kcal to joules and kilojoules.

Concept Introduction:

A conversion factor is a numerical ratio which is used to show a measurement in one unit as another unit. It is always equal to 1.

Expert Solution
Check Mark

Answer to Problem 25QAP

1.41×103 cal = 5899.44×103J and 5.89944×103 kJ.

Explanation of Solution

The given conversion is: conversion of kilocalories to joules and kilojoules.

1 kilocalorie is equal to the 4184 joules and 4.184 kilojoules.

1 kcal = 4184 J and 1 kcal = 4.184 kJ

Thus, conversion factor is given by:

4184 J1 kcal and4.184 kJ1 kcal

So,

1.41×103 kcal

=4.184 kJ1 kcal×1.41×103 kcal=5.89944×103 kJ

1.41×103 kcal

=4184 J1 kcal×1.41×103 kcal=5899.44×103 J.

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Chapter 10 Solutions

Student Solutions Manual for Zumdahl/DeCoste's Introductory Chemistry: A Foundation, 9th

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