Translational kinetic energy does an average molecule have, Physics

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Translational kinetic energy does an average molecule have

A spherical balloon has a diameter of 50.0 cm, absolute pressure inside is 1.25atm and the temperature is 22 degree Celsius. Assume that all the gas in N2 is of molar mass 28.0 g/mol.

(a) find the mass of a single N2 molecule.

(b) How much translational kinetic energy does an average N2 molecule have?

(d) What is the total translational kinetic energy of all the molecules in the balloon?

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Physics: Translational kinetic energy does an average molecule have

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Physics: Translational kinetic energy does an average molecule have

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