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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 4, Problem 48E
Textbook Problem
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Determine the mass of carbon (in kilograms) contained in 143 kilograms of CO 2 .

Interpretation Introduction

Interpretation:

The mass of carbon (in kilograms) in the given amount of  CO2 is to be determined.

Concept Introduction:

The characteristic mass of a compound is considered as the formula mass of the compound, which is obtained by adding the atomic masses of all the atoms.

A conversion factor is considered a numerical ratio in order to change one unit into another.

A chemical formula represents the precise number of atoms in a molecule, but not their structural arrangement.

Explanation of Solution

Given information: 143kilograms of CO2

The equivalence is obtained between grams of CO2 and moles of CO2 with the help of the chemical formula as follows:

1mol CO244.01g CO2

The equivalence takes place between moles of CO2 and moles of C as follows:

1mol C1mol CO2

And,

The equivalence is obtained between grams of C and moles of C with the help of the chemical formula as follows:

1mol C12.01g C

In order to obtain the mass of carbon (C), the conversion factor proceeds as follows:

(143kg CO2)×(1000g1kg)×(1mol CO2 44

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Chemistry In Focus
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