Concept explainers
The rms speeds of helium atom, nitrogen, hydrogen and oxygen molecules.
Answer to Problem 67P
The rms speeds of helium atom, nitrogen, hydrogen and oxygen molecules are
Explanation of Solution
The given temperature is
Find the temperature in Kelvin scale
Here,
Substitute
Write the expression for rms speed of atoms and molecules
Here,
The atomic mass of helium is
Substitute
Thus, the rms speed of helium atom is
The molecular mass of nitrogen is
Substitute
Thus, the rms speed of nitrogen molecule is
The molecular mass of hydrogen is
Substitute
Thus, the rms speed of hydrogen molecule is
The molecular mass of oxygen is
Substitute
Thus, the rms speed of oxygen molecule is
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