Question

At a certain temperature, hydrogen molecules have r.m.s. velocity of 3 km/s. what is the r.m.s velocity of
the oxygen molecules at the same temperature?
(A) 0.25 Km/s
(B) 0.5 Km/s
(C) 0.75 km/s
(D) 6 Km/s​

Answer 1

Answer:

C

Explanation:

r. m. s=√3RT/√M

r.m.s of Hydrogen is given=3km/s=3000m/s

r. m.s of oxygen =?

√3RT/√2=3

√RT=3(√2/√3)

now for oxygen,

r. m. s=√3RT/√32

=√3/√32*3(√2/√3)

=3(√2)/√32

=3/4

=0.75km/s

Answer 2

Answer:0.25

Explanation: