27∘C=300 K
Root mean square speed =√3RTM
R=8.314×107erg K−1mol−1;M=32 g mol−1;T=300 K
Substituting the values,
=√3×8.314×107×30032
=483.56 cm/sec
=483.56 m/sec
Average speed =√8RTπM
=√8×8.314×107×300×722×32
=445.42 cm/sec
=445.42 m/sec
Most probable speed =√2×R×TM
=√2×8.314×107×30032
=39482 cm/sec
=394.83 m/sec.