Explanation:
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light waves do not require a medium so A would be your answer good luck :)
Answer:
More-massive gas molecules in the sample have lower rms speed than less-massive ones.
Explanation:
The rms speed is defined as the prediction that how fast the molecule travel at a given temperature.
Mathematically, rms speed can be written as,
Here, T is the temperature, M is the mass of gas molecule.
Now from this it is clearly seen that rms speed is inversely related with mass of the gas molecule.
Therefore, gas molecule which posses more mass in the sample have smaller rms speed than less-massive ones.