In 1998 scientists using a special type of electron microscope were able to measure the force needed

Question:

In 1998 scientists using a special type of electron microscope were able to measure the force needed to break a single chemical bond. If 2.0 X 10-9 N was needed to break a C-Si bond, estimate the bond enthalpy in kJ/mol. Assume that the bond had to be stretched by a distance of 2 Å (2 X 10-10 m) before it is broken