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Physics, 02.12.2019 18:51 DianaAmaroxoxo4319

1. the average kinetic energy of a molecule, is called thermal energy, it is directly related to absolute temperature. ke (average per molecule) = 12 m v2(average) = 32 kbt (kb =1.38×10−23 j/k) 2. the average speed of molecules in a gas: vrms = 3kbtm√ where vrms stands for root-mean-square (rms) speed. 3. the internal energy of a gas is the total energy of all the n atoms and molecules. for a monatomic gas, each atom (molecule) has only the kinetic energy. therefore, internal energy u = n ke (average per molecule) =n ( 32 kbt) = 32 nkbt = 32 nrt use the ideal gas law: pv = nkbt = nrt, then internal energy u = 32 pv (a) what is the average kinetic energy of a gas molecule at 17 °c? report result in 10-23 j. for example, if the result is 736*10-23 j, enter 736.

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