Search found 9 matches
Search found 9 matches • Page 1 of 1
- Wed Nov 08, 2017 6:52 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis Acids and Bases
- Replies: 2
- Views: 240
In the textbook, Lewis acids and bases don't appear till Ch. 12, but Dr Lavelle mentioned them in lectures. I was wondering whether we'd be expected to know about them for the midterm?
- Sun Oct 29, 2017 10:43 pm
- Forum: *Shrodinger Equation
- Topic: Significance of Schrodinger's Equation [ENDORSED]
- Replies: 1
- Views: 270
I understand that Ψ^2 represents the electron density distribution and hence allows us to find the probability of an electron occurring, but what exactly is the significance of the original wave function (HΨ=EΨ)? What does it help us find/calculate?
- Sun Oct 29, 2017 10:27 pm
- Forum: Trends in The Periodic Table
- Topic: Factors Affecting Energy of an Electron
- Replies: 3
- Views: 683
A factor that affects electron energies in multi-electron atoms would be shielding. So an electron in an outer shell would experience reduced electrostatic attraction (effective nuclear charge), as inner electrons would shield electrostatic attraction between the positive nucleus and the outer elect...
- Tue Oct 17, 2017 4:49 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Why don't we use the Rydberg equation from the book?
- Replies: 8
- Views: 568
Dr Lavelle hasn't talked about similar equations for other atoms, and we wouldn't be expected to know them, at least at our current level.
- Sat Oct 07, 2017 12:25 am
- Forum: SI Units, Unit Conversions
- Topic: Significant Figures [ENDORSED]
- Replies: 9
- Views: 1223
Generally, you would round significant figures according to the value given in the question. For example, if the question gives you 3 sig figs, you would round your percentage to 3 sig figs. If there are 2 values in the question, you would choose the one with the least number of sig figs to base you...
- Thu Oct 05, 2017 4:34 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: E.15 [ENDORSED]
- Replies: 10
- Views: 1093
you find what the metal M is by subtracting the molar mass of (OH)2 from 74.10. you will find that M is calcium, so you just have to calculate the molar mass of CaS (which is the sulfide of the metal)