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Measurements of the sound velocity in nitrogen, argon, and krypton, and the derived heat capacities, are reported for a pressure range up to 12 atm and at two temperatures: the ice point and 303.7°K. It is believed that the data for nitrogen are more consistent than those reported by other investigators, while comparison data for argon and krypton are practically nonexistent.
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S. S. Lestz (1963) studied this question.
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