Chapter 8, Problem 122QRT

(a)

Interpretation Introduction

Interpretation:

Average velocity of a Helium atom has to be calculated.

Concept Introduction:

Average velocity of a specified molecule (v) can be determined at a specific temperature by the given formula,

  $\text{v = }\sqrt{\frac{\text{3kT}}{\text{m}}}$

Where,

$\text{T}$ is the Temperature.

m is the mass of the given substance.

(b)

Interpretation Introduction

Interpretation:

The way in which Helium atoms escape from Earth has to be explained.