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A spherical balloon with a radius of 15.0 cm is filled with oxygen gas at atmospheric...

A spherical balloon with a radius of 15.0 cm is filled with oxygen gas at atmospheric pressure and at a temperature of 15.2°C.

(a) What is the number of molecules of oxygen in the balloon?

(b) What is the average kinetic energy of oxygen in the balloon?

(c) What is the rms speed of oxygen in the balloon?

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