Chapter 9, Problem 9.67SP

(a)

Interpretation Introduction

Interpretation:

The molecular weight of the gases has to be calculated.

Concept Introduction:

Molecular mass:

It is a physical property, which is defined as the mass of a given substance divided by the amount of substance. Unit of the molecular mass is $\text{Kg/mol}$

$\text{molecular}\text{mass}\text{=}\text{amount}\text{of}\text{mass}\text{×}\frac{\text{molar}\text{mass}}{\text{1}\text{mol}}$

Ideal gas equation is an equation that is describing the state of an imaginary ideal gas.

$\text{PV}\text{=}\text{n RT}$

Where,

P is the pressure of the gas

V is the volume

n is the number of moles of gas

R is the universal gas constant $\text{(R=0}{\text{.0821LatmK}}^{\text{-1}}{\text{mol}}^{\text{-1}})$

T is the temperature

(b)

Interpretation Introduction

Interpretation:

The molecular weight of the gases has to be calculated.

Concept Introduction:

Molecular mass:

It is a physical property, which is defined as the mass of a given substance divided by the amount of substance. Unit of the molecular mass is $\text{Kg/mol}$

$\text{molecular}\text{mass}\text{=}\text{amount}\text{of}\text{mass}\text{×}\frac{\text{molar}\text{mass}}{\text{1}\text{mol}}$