Two rigid boxes containing different ideal gases are placed on a table . Box A contains one mole of nitrogen at temperature ๐_๐ , while box B contains one mole of helium at temperature 7/3 ๐_๐ . The boxes are then put into thermal contact with each other and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes and heat exchange will happen only between boxes ) . Then the final temperature of the gases in terms of ๐_๐ is 7/3 ๐_๐ 3/2 ๐_๐ 5/2 ๐_๐ 3/7 ๐_๐
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