Question

At 27C a gas contain 10 molecule travling with a speed of 4m/sec ;20 molecule with a speed of 5m/sec and 40 molecule with a speed of 8m/sec calculate the Average speed root mean square speed and most probable speed o gas at 27C.​

Answer 1

Explanation:

The rms velocity is :

u=

n

u

1

2

+u

2

2

+....u

n

2

=

20

5×(2)

2

+10×(3)

2

+5×(6)

2

=3.8m/s

The average velocity is :

v=

n

v

1

+v

2

+....+v

n

=

20

5×2+10×3+5×6

=3.5m/s

Answer 2

The rms velocity is :

u=nu12+u22+....un2=205×(2)2+10×(3)2+5×(6)2=3.8m/s

The average velocity is :

v=nv1+v2+....+vn=205×2+10×3+5×6=3.5m/s