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Which of the following statements accounts for the observation that, at 300 K and 10 atm, the molar volume of C2H6(g) is less than that of H2(g)?
A C2H6 molecules are smaller than H2 molecules.
B The average kinetic energy of H2 molecules is greater than that of C2H6 molecules.
C The average kinetic energy of H2 molecules is less than that of C2H6 molecules.
D The intermolecular attractions in C2H6(g) are weaker than they are in H2(g).
*E The intermolecular attractions in C2H6(g) are stronger than they are in H2(g).
E is the correct answer, but it also seems like B is a reasonable answer, doesn't higher kinetic energy make a substance's volume increase? Isn't that why heating things causes them to expand?
A C2H6 molecules are smaller than H2 molecules.
B The average kinetic energy of H2 molecules is greater than that of C2H6 molecules.
C The average kinetic energy of H2 molecules is less than that of C2H6 molecules.
D The intermolecular attractions in C2H6(g) are weaker than they are in H2(g).
*E The intermolecular attractions in C2H6(g) are stronger than they are in H2(g).
E is the correct answer, but it also seems like B is a reasonable answer, doesn't higher kinetic energy make a substance's volume increase? Isn't that why heating things causes them to expand?