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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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Chapter
Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Perform the indicated conversions.

ol type='a'>

  • 625.2 cal into kilojoules
  • 82.41 kJ into joules
  • 52.61 kcal into joules
  • 124.2 kJ into kilocalories
  • Interpretation Introduction

    (a)

    Interpretation:

    Convert 625.2 cal to 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.

    Explanation

    The given conversion is: conversion of calories to kilojoules.

    1 calorie is equal to 0.004184 kilojoule.

    1 cal = 0.004184 kJ

    Thus, conversion factor is given by:

    0.004184 kJ1 cal 

    So,

    625

    Interpretation Introduction

    (b)

    Interpretation:

    Convert 82.41 kilojoules to joules.

    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.

    Interpretation Introduction

    (c)

    Interpretation:

    Convert 52.61 kilocalories to joules.

    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.

    Interpretation Introduction

    (c)

    Interpretation:

    Convert 124.2 kilojoules to kilocalories.

    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.

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