Chemistry

Problem

1. Outline what is meant by the term *root mean square speed of atoms*. 2. Show that the root mean square (rms) speed of an atom can be written as

v_{\text{rms}} = \sqrt{\frac{3RT}{M}}

, where

R

is the molar gas constant,

T

is the absolute temperature and

M

is the molar mass. 3. Hence, calculate the rms speed of an oxygen molecule at a temperature of 25 °C.