Chapter 5, Problem 85E

a)

Interpretation Introduction

Interpretation:Flask with molecules that have greatest average kinetic energy should be determined.

Concept introduction:Expression of average kinetic energy is as follows:

  ${\left(\text{KE}\right)}_{\text{avg}}=\frac{3}{2}RT$

Where,

• $R$ is gas constant.
• $T$ is temperature of gas.

b)

Interpretation Introduction

Interpretation: Flask with molecules that have greatest root meat square velocities should be determined.

Concept introduction:Root mean square velocity is square root of average particles velocities. It is denoted by $u_{\text{rms}}$ . Expression for $u_{\text{rms}}$ is as follows:

  $u_{\text{rms}}=\sqrt{\frac{3RT}{M}}$

Where,

• $R$ is gas constant.
• $T$ is temperature of gas.
• $M$ is molecular weight.

c)

Interpretation Introduction

Interpretation: Flask higher number of collisions per second with walls of container should be determined.

Concept introduction:Perpendicular force that acts on an object per unit surface area is defined as pressure. Pressure can be expressed in different units. S.I. unit of pressure is Pascal represented by ‘ $\text{Pa}$ ’.