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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 33E
Textbook Problem
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Mole Conversions

How many moles of CO 2 are contained in a 10.5-g sample of dry ice (pure solid CO 2 )?

Interpretation Introduction

Interpretation:

The number of moles of CO2 contained in a given sample of dry ice is to be determined.

Concept Introduction:

The characteristic mass of a compound is considered the formula mass of that compound, which is obtained by adding the atomic masses of the atoms present in the formula unit of that compound.

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

The formula mass of a compound in amu is considered numerically equal to the molar mass of that compound in gram/mol.

Explanation of Solution

Given information: The mass of sample (dry ice) is 10.5g.

The molar mass of CO2(dry ice) is 44.01g/mol

A conversion factor between the grams of CO2 and moles of CO2 is calculated as follows:

10

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Chapter 4 Solutions

Chemistry In Focus
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