How many moles is 9.41X10^25 molecules Iron (II) Phosphate? It’s a conversion bridge, but is the mass just iron plus phosphate?
I’m confused lol, thank you

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

It is sure ( overimitation)