Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will.
increase
decrease
remains the same
decrease for some and increase for others
Get Answer
The centre of mass of the gas molecules moves with uniform speed along with lorry As there is no change in relative motion, the translational kinetic energy and hence the temperature of the gas molecules will remain same.
At a given temperature which of the following gases possesses maximum r.m.s. velocity?
Hydrogen
Oxygen
Nitrogen
Carbon dioxide
is least for hydrogen among the hydrogen, oxygen, nitrogen and carbon dioxide.
The root mean square speed of a group of gas molecules, having speed
is
If is the translational kinetie energy, then which of the following relation holds good?
Translational kinetic enegy
Consider a sample of oxygen behaving like an ideal gas. At , the ratio of root mean square ( ) velocity to the average velocity of gas molecule would be : (Molecular weight of oxygen is )
RMS speed of gas molecule at NTP
Average speed of gas molecule at NTP
The required ratio
The temperature at which oxygen molecules have the same root mean square speed as that of hydrogen molecules at is
The kinetic theory of gases states that the average squared velocity of molecules varies linearly with the mean molecular weight of the gas. If the root mean square ( ) velocity of oxygen molecules at a certain temperature is . The rms velocity for hydrogen molecules at the same temperature will be :
When temperature is same according to kinetic theory of gases, kinetic energy of molecules will be same.
K.E.
Find the temperature at which the Vrms for molecule is
RMS velocity of hydrogen molecules .
The r.m.s. velocity of oxygen molecule at is . The r.m.s. velocity in of hydrogen molecule at is
1603
1896
2230.59
2730
so
The root mean sqaure velocity of the molecules in a sample of helium is th that of the molucules in a sample of hydrogen. If the temperature of hydrogen sample is , that of helium sample is about
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