The mean free path of a gas molecule is:
A. the shortest dimension of the containing vessel
B. the cube root of the volume of the containing vessel
C. approximately the diameter of a molecule
D. average distance between adjacent molecules
E. average distance a molecule travels between intermolecular collisions
Answer: E. average distance a molecule travels between intermolecular collisions
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Thermal Expansion: The coefficient of linear expansion of copper is 17 × 10-6 K-1 and that of steel is 12 × 10-6 K-1. At 12°C a steel rod has a diameter of 2.540 cm and a copper pipe has a diameter of 2.536 cm. If they are heated together to a higher temperature, which one of the following quantities is closest to the common temperature at which the steel rod will fit snugly in the copper pipe?
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