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Kinetic Energy and Molecular Speeds

States of Matter
Chemistry
Class 11

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Kinetic Energy and Molecular Speeds of Gases

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The average velocity of an ideal gas molecule at is . The average velocity at will be :

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If , ..... represent the speeds of ...... molecules,  then the root mean square speed is:

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If of a gas is 30 at then the molar mass of gas is :

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At what temperature will he atom have the same speed as molecules have at ?

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The root mean square speed of hydrogen molecule of an ideal hydrogen gas kept in a gas chamber at is metre/ second. The pressure on the hydrogen gas is: (density of hydrogen gas is ).

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Different gases at the same conditions of temperature and pressure have same root mean square speed.

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Calculate the temperature at which the average velocity of oxygen gas are all equal to 1500 .

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The ratio of the velocities of and helium gas molecules at is: 

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What is the ratio of the number of molecules having speeds in the range of  and to the number of molecules having speeds in the range of and ?
(Answer should be closest integer to the ratio)

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For a gaseous state, if most probable speed is denoted by , average speed by and mean square by , then for a large number of molecules the ratios of these speeds are:

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