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What is the Celsius temperature of 1 mole of a gas that has an average kinetic energy of 4,265 joules?

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It is said that the average kinetic energy of the molecules in a gas system is directly proportional to its temperature. We use this to solve the temperature. We do as follows:

Kinetic Energy = (3/2) nRT
4265 = (3/2) (1)(8.314) (T)
T = 341.99 K = 68.84 degrees Celsius
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