Chapter 12.6, Problem 2.2ACP

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Chapter
Section

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

# If a graphene sheet has a width of 1.0 micrometer, how many C6, rings are joined across the sheet?

Interpretation Introduction

Interpretation:

Number of C6 ring that is joined across the sheet has to be calculated.

Concept introduction:

The angle bounded by the side of the hexagon is 30o.

Therefore,

Explanation

According to the hexagon diagram, distance x has to calculate.

Therefore,

The interior angles in a hexagon are 120o.

To find the Side to side dimension of the planar, first need to know the distance of y in the figure,

Thus, yÂ =Â x2.

The angle bounded by the side of the hexagon and y is 30o.

Therefore,

CosÂ 30o=Â yhexagonÂ sideÂ y=Â CosÂ 30oÃ—Â hexagonÂ sidey=Â (0.866)Â Ã—Â 139Â pmy=Â (0.866)Â Ã—Â 139Â pmy=Â 120

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