Consider the ligand: 1, 10-Phenanthrine (phen). Explain the origin of an absorption at 510 nm (ε = 11 000 dm nol-1 cm) in the electronic absorption of [Fe(phen)3]2+ pls help!!

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

the answer is 0.42 is that is an option. this question provides no info