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The boiling point of benzene is 80°C. Which pair of samples will have the same average kinetic energy as benzene molecules? (1 point)

O two samples of gaseous benzene, one at 80°C and the other at 90°C

O a sample of liquid benzene at 80°C and a sample of gaseous benzene at 80°C

O a sample of liquid benzene at 70°C and a sample of gaseous benzene at 90°C

O two samples of liquid benzene, one at 70°C and the other at 80°C

Sagot :

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A sample of liquid benzene at 80°C and a sample of gaseous benzene at 80°C will have the same average kinetic energy of benzene molecules.

Let us recall that the average kinetic energy of molecules depends on the molar mass of the substance as well as the temperature of the substance. We have that;

average kinetic energy= [tex]\frac{3RT}{2NA}[/tex]

R = gas constant

NA =Number of molecules

M = Temperature in Kelvin

We can see that the average kinetic energy depends on temperature therefore, a sample of liquid benzene at 80°C and a sample of gaseous benzene at 80°C will have the same average kinetic energy of benzene molecules.

Learn more: https://brainly.com/question/6284546

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