38. 兩個質子互相接近，均以0.960c相對於實驗室座標系運動。則此兩質子間之相對速率為何？ (A)0.960c　(B)0.999c　(C)1.010c　(D)1.920c

6. Given that the enthalpy required to convert CHCl3(g) to gaseous C, H, and Cl atoms is 1397 kJ/mol and that the dissociation enthalpy of a C-H bond is 413 kJ/mol, what is the bond dissociation enthalpy of a C-Cl bond？ (A)328 kJ/mol　(B)603 kJ/mol　(C)984 kJ/mol　(D)1397 kJ/mol