The number of molecules of oxygen in a pound mole of air at 1 atm and 0 ° C and number of molecules of oxygen in kilogram mole of air at 1 atm and 30 ° C is to be calculated. Concept introduction: The number of molecules of any atom in a molecule is calculated by multiplying the number of moles of an atom with the Avogadro number. The pound mole is to be converted into g mole and kilogram mole is to be converted into g mole. The formula for calculating number of molecules is The number of molecules = The number of g mol × Avogadro's number The number of molecules of an atom is not affected by the temperature and pressure.

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Chapter 1, Problem 1.16P

Interpretation Introduction

Interpretation:The number of molecules of oxygen in a pound mole of air at 1 atm and 0 °C and number of molecules of oxygen in kilogram mole of air at 1 atm and 30 °C is to be calculated.

Concept introduction: The number of molecules of any atom in a molecule is calculated by multiplying the number of moles of an atom with the Avogadro number.

The pound mole is to be converted into g mole and kilogram mole is to be converted into g mole.

The formula for calculating number of molecules is

The number of molecules = The number of g mol×Avogadro's number

The number of molecules of an atom is not affected by the temperature and pressure.

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