A chemist claims to have found a complex ion where the most intensely absorbed light is 342.0 nm. Estimate the crystal field splitting energy for this ion in kJ/mol
2007-12-10 13:22:49 · 3 answers · asked by jeniferrrr 1 in Science & Mathematics ➔ Chemistry
Ok so here are the formulaes
speed = frequency times wavelength
speed is a constant = 2.998 X 10^8
our wavelength is 342nm so we divide that by 10^9 to get it in meters so we have
2.998 X 10^ 8 = frequency times 3.42 X 10^ - 7
we divide and our frequency = 8.766 times 10^14
second equation is
energy = Planks constant times frequency
so energy = 6.626 X 10^ - 34 times 8.776 X 10^ - 7
energy = 5.808 X 10^ - 5
this is in joules, to get it in kj/mole; we divide by a thousand, and multiply by 6.022 X 10^23 so our final answer will be!
349.782 KJ/Mol
2007-12-10 13:29:55 · answer #1 · answered by Answer 7 · 1⤊ 0⤋
Ghady's got it, but 4 significant figures, plzzzz.
2007-12-10 21:32:35 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
oh wow this is a very hard question to be asked and answered.
I think you have to find this answer by asking Jeeves.... he knows MANY things you know...
sry for the NO help... =/
2007-12-10 21:26:14 · answer #3 · answered by hyorkim11 2 · 0⤊ 0⤋