14. The root mean square speed of N2 at 300 K is about(A) 5170 m/s (B) 517 m/s (C) 51.7 m/s (D) 5.17 m/s.

14. The root mean square speed of N₂ at 300 K is about
(A) 5170 m/s
(B) 517 m/s
(C) 51.7 m/s
(D) 5.17 m/s.

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22. Of the statements below, which one can best explain why CH4 is a gas at STP, while C8H18 is a liquid and C20H42 is a solid? (A) C20H42 has the greatest ionic interaction between its molecules. (B) C8H18 has a greater amount of hydrogen bonding than CH4 or C20H42. (C) There is more dipole-dipole interaction between molecules of greater mass. (D) There are more Van der Waals (dispersion) forces between nonpolar molecules that are greater in mass.

14. The root mean square speed of N₂ at 300 K is about
(A) 5170 m/s
(B) 517 m/s
(C) 51.7 m/s
(D) 5.17 m/s.

詳解 (共 1 筆)

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相關試卷

14. The root mean square speed of N2 at 300 K is about(A) 5170 m/s(B) 517 m/s(C) 51.7 m/s(D) 5.17 m/s.

詳解 (共 1 筆)

相關試題

相關試卷

14. The root mean square speed of N₂ at 300 K is about
(A) 5170 m/s
(B) 517 m/s
(C) 51.7 m/s
(D) 5.17 m/s.