Search found 21 matches

by Tara 1F
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
by Tara 1F
Sun Jul 30, 2017 7:33 pm
Forum: Identifying Acidic & Basic Salts
Topic: Page 159 course reader
Replies: 1
Views: 378

Page 159 course reader

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.
by Tara 1F
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 ?
by Tara 1F
Sun Jul 30, 2017 7:31 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: COURSE READER PAGE 155
Replies: 1
Views: 242

COURSE READER PAGE 155

Why does it become more acidic with more oxygen?
by Tara 1F
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.
by Tara 1F
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 :)
by Tara 1F
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!
by Tara 1F
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!
by Tara 1F
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?
by Tara 1F
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!
by Tara 1F
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
by Tara 1F
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 :)
by Tara 1F
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
by Tara 1F
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?
by Tara 1F
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
by Tara 1F
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?
by Tara 1F
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 ...
by Tara 1F
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.
by Tara 1F
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
by Tara 1F
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...
by Tara 1F
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...

Go to advanced search