## Search found 10 matches

Sat Dec 03, 2016 11:58 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Practice Final 2015 #5A
Replies: 1
Views: 374

### Re: Practice Final 2015 #5A

I tried to calculate the formal charge and got +1 so I am also confused as to how it is negative.
Wed Nov 30, 2016 8:03 pm
Forum: Naming
Topic: Fall 2012 Final #5b
Replies: 1
Views: 354

### Fall 2012 Final #5b

Write the formula for the following coordination compound.
triamminetrichloronickel(IV) sulfate

I understood how they got everything except for the 2 outside of the bracket. Can someone explain why it is 2 because I got 1? Thank you!
Sun Nov 20, 2016 3:37 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Why is water always a monodentate?
Replies: 2
Views: 492

### Re: Why is water always a monodentate?

Both of the lone pairs are on the oxygen and oxygen binds only once to the central metal so it is mono dentate.
Wed Nov 09, 2016 2:02 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Equilibrium Constant vs Reaction Quotient [ENDORSED]
Replies: 4
Views: 1064

### Equilibrium Constant vs Reaction Quotient[ENDORSED]

Since you calculate the reaction quotient Q and the equilibrium constant K using the same method, how will you be able to compare the two values to determine the direction it will go? Wouldn't they be the same value?
Sat Nov 05, 2016 4:02 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: 4.61 Homework Question
Replies: 3
Views: 541

### Re: 4.61 Homework Question

Why is (sigma 2p) raised to 22 instead of 2? I made the MO diagram and got 2 for CO and 1 for CO+ in the sigma 2p.
Mon Oct 31, 2016 9:55 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Fall 2014 Midterm #7
Replies: 2
Views: 410

### Fall 2014 Midterm #7

The problem asks to draw the lowest energy Lewis structure of HClO3. I drew the Lewis structure as a tetrahedral shape and got zero formal charges for all of them, but when I checked with the answers, it was a trigonal pyramidal structure. Can someone explain what I did wrong and the easiest way to ...
Wed Oct 19, 2016 7:08 pm
Forum: Hybridization
Topic: Building Up Principle [ENDORSED]
Replies: 1
Views: 386

### Building Up Principle[ENDORSED]

In the course reader, there was an example pertaining to the Building Up Principle. It was given that Z=6 and (1s^2)(2s^2)(2px^1)(2py^1). In the periodic table, it says (2s^2)(2p^2). I don't understand how the 2p^2 got split into (2px^1)(2py^1). Can someone explain it? Thanks.
Sun Oct 09, 2016 4:36 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty
Replies: 11
Views: 2123

### Re: Uncertainty

Don't you have to double the speed since it is +/- ? Instead of doing the division with 0.55, I used 1.1 and got 3.2 * 10^-32 as the answer.
Wed Oct 05, 2016 10:09 pm
Forum: Significant Figures
Topic: Quiz 1 Prep Fall 2014 #9 [ENDORSED]
Replies: 2
Views: 556

### Quiz 1 Prep Fall 2014 #9[ENDORSED]

Calculate the de Broglie wavelength of a 0.155 kg ball travelling at 85.0 m.s^-1. The answer I got was 5.03 * 10^-35 m. On the answers page, they said it was 5 * 10^-35 m. I do not understand how they ended up with one significant figure. I thought there were three so I rounded to three. Can someone...
Wed Sep 28, 2016 10:16 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Bohr Frequency Condition
Replies: 2
Views: 7003

### Bohr Frequency Condition

Can someone explain the Bohr frequency condition? I do not understand its application or where the upper and lower energy values come from for the formula.