It asked you to determine thw heat change in the reaction CH4+Cl2-> CH3Cl + HCl You were given the bond energy of C-H= 414 kj/mol C-Cl= 244 kj/mol And the bond energy of H-Cl= 431 kj/mol
How do you find the bond energy of CH3Cl then?

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

What substance has a mass of 9.5g and volume of 2.1cm^3