C3H8+5O2- 3CO2+4H2O how many moles of C3H8 can be made from 3.75 moles of O2

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.

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

‘which reaction would most likely require the use of an inert electrode?