The substance that exists in the gaseous state at room temperature and atmospheric pressure is to be determined. Concept Introduction: Matter exists in three states, namely solids, liquids and gases. Solids and liquids exist due to some attractive forces between their molecules that keep them together. The phase in which a substance exists depends on the strength of its molecular forces. London dispersion forces occur in all substances. The strength of London forces depends on the number of electrons in a given molecule and how tightly those electrons are held.

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Chapter 10, Problem 46QP

Interpretation Introduction

Interpretation:

The substance that exists in the gaseous state at room temperature and atmospheric pressure is to be determined.

Concept Introduction:

Matter exists in three states, namely solids, liquids and gases. Solids and liquids exist due to some attractive forces between their molecules that keep them together. The phase in which a substance exists depends on the strength of its molecular forces.

London dispersion forces occur in all substances. The strength of London forces depends on the number of electrons in a given molecule and how tightly those electrons are held.

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