## Search found 14 matches

Thu Jan 29, 2015 8:23 pm
Forum: Calculating Work of Expansion
Topic: isothermal reversible expansion with V and P change
Replies: 8
Views: 1483

### Re: isothermal reversible expansion with V and P change

Also, the w and q equations have T in them: w = -nRTln(18/6) , q = nRTln(18/6).
Tue Jan 13, 2015 6:29 pm
Forum: Calculating Work of Expansion
Topic: Error in Solutions Manual 7.3
Replies: 1
Views: 311

### Error in Solutions Manual 7.3

There is an error in the solution for Chapter 7, #3a. It gives a conversion factor of (101.325 L / L.atm) when it should be (101.325 J / L.atm). Or so I believe.
Tue Dec 09, 2014 10:14 am
Forum: *Titrations & Titration Calculations
Topic: pKa/b and pH
Replies: 1
Views: 366

### pKa/b and pH

To clarify, under what conditions is the pKa or pKb found at the halfway mark to the equivalence point?
Mon Dec 01, 2014 7:25 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quiz 3 #10
Replies: 8
Views: 1110

### Quiz 3 #10

The question asks for equilibrium partial pressures but we're given moles and volume. How do we get between these?
Mon Nov 24, 2014 9:21 am
Forum: Naming
Topic: Charge on example compound, pg 100 in CR
Replies: 1
Views: 308

### Charge on example compound, pg 100 in CR

[Co(NH3)5 Cl] Cl . 2H20 is used as a naming example: Penta Ammine Chloro Cobalt(II) Chloride Dihydrate. I was confused as to why the Cobalt charge was +2. Does the NH3 not contribute to calculating the charge or something?
Mon Nov 10, 2014 5:37 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Determining shapes
Replies: 1
Views: 280

### Determining shapes

Are shapes of coordination compounds determined the same way as shapes in VSEPR theory?
Fri Nov 07, 2014 12:56 am
Forum: Determining Molecular Shape (VSEPR)
Topic: COCl2 Polar or Nonpolar?
Replies: 4
Views: 25624

### Re: COCl2 Polar or Nonpolar?

You do have to factor in that electronegative oxygen. COCl2 is polar- check out the chart on page 103 of the textbook. It actually shows a model of it!
Mon Nov 03, 2014 10:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Hybridization and bond types
Replies: 2
Views: 523

### Hybridization and bond types

Do sigma and pi bonds play any part in determining the hybridization of orbitals?
Mon Oct 27, 2014 6:20 pm
Forum: Ionic & Covalent Bonds
Topic: Coordinate covalent bond
Replies: 2
Views: 2320

### Coordinate covalent bond

What makes a 'coordinate' covalent bond different than any other covalent bond? For example, course reader says a coordinate covalent bond is formed when BF4- is formed from BF3 and F-.
Tue Oct 21, 2014 1:10 pm
Forum: Limiting Reactant Calculations
Topic: Fundamental Self Test - Limiting Reagent
Replies: 3
Views: 706

### Re: Fundamental Self Test - Limiting Reagent

You have to balance that equation first. Then you'll be able to compare moles and such!
Tue Oct 21, 2014 1:08 pm
Forum: Limiting Reactant Calculations
Topic: Fundamental Self Test - Limiting Reagent
Replies: 3
Views: 706

### Re: Fundamental Self Test - Limiting Reagent

You have to balance that equation first. Then you'll be able to compare moles and such!
Sun Oct 19, 2014 12:09 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Why does f-block start there?
Replies: 1
Views: 361

### Why does f-block start there?

When n = 4, then angular momentum number L can be 3. The f-orbital corresponds to L = 3. So why does the 4f orbital only start getting filled in the 6th period of the periodic table? Rather than the 4th period?
Thu Oct 16, 2014 12:55 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Electron Spins
Replies: 5
Views: 861

### Electron Spins

Mostly out of curiosity, why can't electrons spin the same way in the same orbital, as the Pauli Exclusion Principle says? How do they affect each other in this way?
Tue Oct 07, 2014 5:32 pm
Forum: SI Units, Unit Conversions
Topic: Exercise 1 in Fundamentals Section
Replies: 2
Views: 686

### Re: Exercise 1 in Fundamentals Section

This is E1 for clarification. You're right, you should use the diameter to find the length. I think the atomic radius is given just because atoms are usually classified by radius rather than diameter.

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