Recent content by President Mercury

Thank you. I guess I couldn't find it since I didn't simply put "calculation" at the end of my search.

Ok most questions (that I have come across) when dealing with the Born Haber Cycle give the Sublimation energy, the Dissociation energy, the Electron Affinity, the Ionization Energy, and the Formation Energy. I know that to get the Formation Energy it is: Hf= Hs+Hi.e.+1/2Hd+He.a.+U (Lattice...

Ok most questions (that I have come across) when dealing with the Born Haber Cycle give the Sublimation energy, the Dissociation energy, the Electron Affinity, the Ionization Energy, and the Formation Energy. I know that to get the Formation Energy it is: Hf= Hs+Hi.e.+1/2Hd+He.a.+U (Lattice...

Question: The first and second ionization energies of K are 419 kJ/mol and 3052 kJ/mol, and those of Ca are 590 kJ/mol and 1145 kJ/mol, respectively. Compare their values and comment on the differeneces. I'm thinking of two different ways of how to do this even though I think both are wrong...

I probably should have bailed on this guy. He doesn't even know the english language that well -_-

Chemistry. And I get exactly what you mean so thanks :biggrin:

Actually there is also a part that is called deviations from average which I found. The rest of the results are from weighing an empty beaker then adding 10mL of water three times, then we had to find the density of the water and the average density. After that was the deviations from the average.

Yes but isn't this more then just finding the mean?

Well I figured the average value would be the weight of the beaker empty. Since that is the original state it is in. I don't think that I have to consentrate on the 10mL part and I probably shouldn't have mentioned it. I know this is vague but if the average value isn't given then where else...

Before the weighing we do weigh the beaker empty. Adding the 10mL comes afterwards but it happens three times, so it would be 10mL then 20mL then 30mL.

How do you find the average value in an experiment when all it consist of is weighing a beaker and adding 10 mL of water three times to it?

Actually the sites you just gave me were the same ones that I already saw but I got frustrated so I didn't read the whole thing through. Thanks for the help though.

I'm having trouble understanding anything dealing with the subject of orbitals, shells, subshells, electron configuration, etc. I'm sure no one on this site is going to want to explain it to me in full or anything like that; I'm not expecting it. Can anyone suggest a website that explains this...

The question isn't exactly like this but this is the jist of it: Give the values of the quantum numbers associated witht he following orbitals: 2p, 3s, and 5d. I ,frankly, do not understand what they are asking for. So can anyone explain this for me. Thanks.

Thank you! I shall give them nanometers! ...nanometers that destroy:devil: No but seriously thank you o:)