The given table should be completed. Mass of sample Moles of sample Molecules in sample Atoms in sample 4.24 g C 6 H 6 0.224 mol H 2 O 2.71 × 10 22 molecules CO 2 1.26 mol HCl 4.21 × 10 24 molecules H 2 O 0.297 g CH 3 OH Concept Introduction: Number of moles is related to mass and molar mass as follows: n = m M Here, m is mass and M is molar mass. According to Avogadro’s law, 1 mole of a substance contains 6.023 × 10 23 atoms. This is known as Avogadro’s number and denoted by symbol N A . Thus, number of molecules can be calculated from number of moles using the following conversion factor: ( 6.023 × 10 23 molecules 1 mol ) .

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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
BuyFind

Introductory Chemistry: A Foundati...

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

Solutions

Chapter 8, Problem 85AP
Interpretation Introduction

Interpretation:

The given table should be completed.

Mass of sample Moles of sample Molecules in sample Atoms in sample
4.24 gC6H6
0.224 molH2O
2.71×1022 moleculesCO2
1.26 molHCl
4.21×1024 moleculesH2O
0.297 gCH3OH

Concept Introduction:

Number of moles is related to mass and molar mass as follows:

n=mM

Here, m is mass and M is molar mass.

According to Avogadro’s law, 1 mole of a substance contains6.023×1023 atoms. This is known as Avogadro’s number and denoted by symbolNA.

Thus, number of molecules can be calculated from number of moles using the following conversion factor:

(6.023×1023 molecules1 mol).

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