## Search found 21 matches

Sun Jul 30, 2017 7:35 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Icebox for Buffers?
Replies: 5
Views: 1242

### Re: Icebox for Buffers?

Does anyone know a good homework question where we would use an ICE BOX as i find them easier
Sun Jul 30, 2017 7:33 pm
Forum: Identifying Acidic & Basic Salts
Replies: 1
Views: 378

Why does a salt containing an acid lower the pH? As it says CL does not affect the pH I'm a little confused on this topic.
Sun Jul 30, 2017 7:32 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Ka and Kb values
Replies: 3
Views: 383

### Ka and Kb values

Do we need to learn the Ka and Kb value of common acids and bases or do you think they'll be given ?
Sun Jul 30, 2017 7:31 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Replies: 1
Views: 242

Why does it become more acidic with more oxygen?
Tue Jul 18, 2017 12:01 am
Forum: Electronegativity
Topic: Electron Affinity
Replies: 12
Views: 1385

### Re: Electron Affinity

Oops I mean thursday the 27th.
Mon Jul 17, 2017 8:49 pm
Forum: Electronegativity
Topic: Electron Affinity
Replies: 12
Views: 1385

### Re: Electron Affinity

The test is next thursday the 24th :)
Mon Jul 17, 2017 8:39 pm
Forum: Ionic & Covalent Bonds
Topic: Homework problem chapter 3
Replies: 3
Views: 507

### Re: Homework problem chapter 3

Part a!
Mon Jul 17, 2017 8:39 pm
Forum: Lewis Structures
Topic: Homework problem 3.25
Replies: 6
Views: 1004

### Homework problem 3.25

I'm confused on the steps on how to solve this problem. Can someone show me how they solved it or give tips!
Sun Jul 16, 2017 5:09 pm
Forum: Resonance Structures
Topic: Resonance vs. Lewis Structure?
Replies: 9
Views: 1293

### Re: Resonance vs. Lewis Structure?

The difference between these is a subject I'm struggling with. Does anyone have any tips/homework problems that they think help explain?
Sun Jul 16, 2017 5:07 pm
Forum: Electronegativity
Topic: Electron Affinity
Replies: 12
Views: 1385

### Re: Electron Affinity

Do you think in our exam next thursday the 24th that we will be asked questions that relate to the trends in the periodic table ? If so does anyone know a good way to remember them!
Sun Jul 16, 2017 5:04 pm
Forum: Octet Exceptions
Topic: Homework help Chapter 3 111
Replies: 1
Views: 304

### Homework help Chapter 3 111

Anyone do this problem. Especially with the part of drawing the resonance structures
Sun Jul 16, 2017 5:01 pm
Forum: Ionic & Covalent Bonds
Topic: Homework problem chapter 3
Replies: 3
Views: 507

### Homework problem chapter 3

Can somebody show me how they drew the lewis structure for chapter 3 question 49. Thanks :)
Sun Jul 09, 2017 8:44 pm
Forum: Quantum Numbers and The H-Atom
Topic: How to find magnetic spin
Replies: 2
Views: 586

### Re: How to find magnetic spin

Are the spins always opposite to each other? if so why?/ are there any exceptions
Sun Jul 09, 2017 8:41 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: S, P, D, and F Orbitals [ENDORSED]
Replies: 4
Views: 729

### Re: S, P, D, and F Orbitals[ENDORSED]

I am also confused on the s and d orbital format when writing the electron configuration. Does anyone recommend a good example from the book or elsewhere that helps explain it?
Mon Jul 03, 2017 4:54 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reaction Question- Getting different answer
Replies: 9
Views: 1055

### Re: Limiting Reaction Question- Getting different answer

Can you explain how you got the limiting reactant?

I got the second part but still confused on first
Mon Jul 03, 2017 4:15 pm
Forum: Molarity, Solutions, Dilutions
Topic: Calculation error help!
Replies: 2
Views: 306

### Calculation error help!

A solution is prepared by dissolving 55.1g of KCl in approx 75mL water and then adding water to a final volume of 125mL. What is the molarity of Kcl (aq) in this solution?
Mon Jul 03, 2017 4:13 pm
Forum: Molarity, Solutions, Dilutions
Topic: Help with a problem!
Replies: 1
Views: 338

### Help with a problem!

Question: 5.00g of KMno4 is dissolved in a 150mL flask of water. If 20ml of this solution is removed and placed in a new 2nd 250ml flask and filled with water what is the concentration of the solution in the 2nd flask? Molar masses: K(39.10g/mol) Mn(54.94g/mol) and O(16.00g/mol) Can someone explain ...
Sun Jul 02, 2017 7:33 pm
Forum: Properties of Light
Topic: Amplitude versus wavelength
Replies: 4
Views: 423

### Amplitude versus wavelength

In relation to page 39 of the course reader, if the wavelength is longer am i correct in saying the frequency is inversely related and the amplitude is also? I am having trouble reading the notes I took in class.
Sun Jul 02, 2017 7:29 pm
Forum: Photoelectric Effect
Topic: Threshold energy
Replies: 1
Views: 361

### Threshold energy

Does anyone recommend particular questions to review for the topic of photoelectric effect? I'm struggling with this topic
Thu Jun 29, 2017 3:09 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reaction Question- Getting different answer
Replies: 9
Views: 1055

### Limiting Reaction Question- Getting different answer

For this question I'm following the steps from the AV videos but not obtaining the correct answer. The question is: According to the following equation 0.750g of C6H9Cl3 is mixed with 1.000kg of AgNO3 in a flash of water. A white solid AgCl3 completely precipitates out. What is the mass of AgCL prod...
Thu Jun 29, 2017 3:03 pm
Forum: Limiting Reactant Calculations
Topic: Audio visual topic limiting reactant assessment
Replies: 3
Views: 528

### Audio visual topic limiting reactant assessment

Question: How many moles of CO2 (g) are produced when 1kg of CaCO3 (s) is used to neutralise an acid spill? The equation for the reaction at 1atm and 25 degrees celsius is CaCO3 (s) + H2SO4 (aq) --> CaSO4 (s) + CO2(g) + H20 (l) Can someone explain how to do this question, the right answer is 10 mole...