Search found 30 matches
- Sat Dec 08, 2018 1:08 pm
- Forum: Photoelectric Effect
- Topic: Test 2 Q2c
- Replies: 2
- Views: 737
Re: Test 2 Q2c
Is someone able to share a picture or pdf of this question in test 2?
- Sat Dec 08, 2018 1:06 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH vs. pOH
- Replies: 2
- Views: 322
Re: pH vs. pOH
This can be further explained why you can do this equation in pages 457-458 of the textbook! IT shows you how it works
- Sat Dec 08, 2018 1:05 pm
- Forum: Conjugate Acids & Bases
- Topic: Strong acids and bases to memorize
- Replies: 9
- Views: 1498
Re: Strong acids and bases to memorize
Was that list in the textbook? For strong acids?
- Sat Dec 01, 2018 9:13 am
- Forum: Lewis Acids & Bases
- Topic: solution of weak acids with higher pH
- Replies: 4
- Views: 1418
Re: solution of weak acids with higher pH
less dissociation => less H30+ produced=> higher pH!
- Sat Dec 01, 2018 9:11 am
- Forum: Ionic & Covalent Bonds
- Topic: Intra vs Intermolecular forces
- Replies: 9
- Views: 16457
Re: Intra vs Intermolecular forces
Intramolecular forces are harder to break! You are actually breaking a BOND rather than a force of attraction
- Sat Dec 01, 2018 9:10 am
- Forum: Bronsted Acids & Bases
- Topic: Memorizing Acids and Bases [ENDORSED]
- Replies: 2
- Views: 289
Re: Memorizing Acids and Bases [ENDORSED]
Also, usually you can tell if it is a bigger molecule and only dissociates partly e.g. CH3COOH, it will be a weaker base
- Wed Nov 21, 2018 3:58 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Electron pair arrangement, actual structure
- Replies: 3
- Views: 336
Re: Electron pair arrangement, actual structure
I think for this question it is best to just memorize the different shapes and whether it has one lone pair or two lone pairs etc.
- Wed Nov 21, 2018 3:57 pm
- Forum: Hybridization
- Topic: Hybridization
- Replies: 6
- Views: 508
Re: Hybridization
Another good tip
Single bond : sigma bond
Double bond: sigma and pi bond
Triple bond : sigma and two pi bonds
Single bond : sigma bond
Double bond: sigma and pi bond
Triple bond : sigma and two pi bonds
- Wed Nov 21, 2018 3:55 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: predicting dipole moments
- Replies: 4
- Views: 382
Re: predicting dipole moments
All of these answers are very helpful! Intermolecular interactions is a hard topic to grasp so these were very helpful!
- Fri Nov 16, 2018 5:26 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Repulsion Strength
- Replies: 7
- Views: 677
Re: Repulsion Strength
All of these are so helpful! I didn't even think to distinguish the qualitative model from the quantitative model!
- Fri Nov 16, 2018 5:23 pm
- Forum: Resonance Structures
- Topic: Resonance Structures
- Replies: 6
- Views: 821
Re: Resonance Structures
I was wondering if for resonance structures do you need to have the same element of atom surrounding the central atom? And can there be more than one double bond for resonance to occur? In all the examples we have looked at and some I have looked at online, there seems to be only one double bond in...
- Fri Nov 16, 2018 5:19 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Polar v. Non Polar
- Replies: 7
- Views: 847
Re: Polar v. Non Polar
I was wondering does polarity always have to do with the symmetry of the molecule or are there exceptions? I think symmetry plays a role in guessing whether the molecule is polar or not, but you also have to consider the electronegativities of the atom as this is really important. There are probabl...
- Fri Nov 09, 2018 1:13 pm
- Forum: Octet Exceptions
- Topic: Octet vs formal charge
- Replies: 16
- Views: 3061
Re: Octet vs formal charge
All these answers were really helpful thank you!!
- Fri Nov 09, 2018 1:12 pm
- Forum: Dipole Moments
- Topic: Induced Dipole Meaning
- Replies: 2
- Views: 349
Re: Induced Dipole Meaning
I will try my best! Induced dipole means that when atoms of an element that are bonded together e.g F-F , because there will always be partial positive and partial negative charges going on within the element, one atom with partial charges can induce the atoms bonded around it to have partial charge...
- Fri Nov 09, 2018 1:10 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 13
- Views: 2288
Re: Bond Angles
Bond angles are caused by the laws of electron repulsion theory, and atoms that interact around a central atom they are all bonded to orientate themselves to produce the most stable structure
- Sun Nov 04, 2018 7:01 am
- Forum: *Shrodinger Equation
- Topic: Schrodinger's Equation
- Replies: 6
- Views: 1243
Re: Schrodinger's Equation
I didn't understand this concept at all so thanks for explaining it to me better!
- Sun Nov 04, 2018 6:59 am
- Forum: Electronegativity
- Topic: What are the trends useful for?
- Replies: 12
- Views: 911
Re: What are the trends useful for?
The trends are also useful to predict/determine where an element would be in the periodic table!
- Sun Nov 04, 2018 6:57 am
- Forum: Lewis Structures
- Topic: Cations and Anions
- Replies: 3
- Views: 365
Re: Cations and Anions
I always forget this so thank you for the explanation!
- Fri Oct 26, 2018 9:53 am
- Forum: Significant Figures
- Topic: When to round the answers to significant figures
- Replies: 11
- Views: 2575
Re: When to round the answers to significant figures
I leave all the numbers not rounded until the end! That way it’s the most accurate answer!
- Fri Oct 26, 2018 9:53 am
- Forum: Ionic & Covalent Bonds
- Topic: Chemical Bonding
- Replies: 8
- Views: 753
Chemical Bonding
Did Lavelle say he was starting bonding today in class? And if so does anyone know how in depth we will go with the bonding?
- Fri Oct 26, 2018 9:51 am
- Forum: General Rate Laws
- Topic: Unique Reaction Rates [ENDORSED]
- Replies: 45
- Views: 162463
Re: Unique Reaction Rates [ENDORSED]
These explanations were very helpful! Totally forgot about this !
- Tue Oct 16, 2018 6:58 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Question 1.15 sixth edition
- Replies: 10
- Views: 773
Re: Question 1.15 sixth edition
Very helpful thank you! I got stuck on this problem too!
- Tue Oct 16, 2018 6:50 pm
- Forum: Photoelectric Effect
- Topic: Definition for photoelectric effect
- Replies: 4
- Views: 458
Definition for photoelectric effect
Does anyone have a good definition for the photoelectric effect? Thanks!
- Tue Oct 16, 2018 6:48 pm
- Forum: DeBroglie Equation
- Topic: Formulas
- Replies: 5
- Views: 499
Formulas
Has anyone got a way to remember formulas? Or will we get all the formulas we need on the exam
- Fri Oct 12, 2018 9:18 pm
- Forum: Administrative Questions and Class Announcements
- Topic: DOWNLOAD SESSION WORKSHEETS HERE - Sundays 4-6pm (Karen) [ENDORSED]
- Replies: 135
- Views: 38463
Re: DOWNLOAD SESSION WORKSHEETS HERE - Sundays 4-6pm (Karen) [ENDORSED]
This is going to be so helpful! The more resources the better!
- Fri Oct 12, 2018 9:16 pm
- Forum: Properties of Light
- Topic: question from class today
- Replies: 3
- Views: 176
question from class today
Can anyone explain how Lavelle cancelled both the s and s^-2 to result in the only unit being m left over? If that makes sense haha!
Lucy Agnew
Lucy Agnew
- Fri Oct 12, 2018 9:11 pm
- Forum: DeBroglie Equation
- Topic: Equations
- Replies: 9
- Views: 795
Equations
I know that we got all of the equations in the most recent test, but do we get all the equations and formulas in the midterms and finals? And to save time, does anyone have a fast way to remember them?
Thanks!
Thanks!
- Wed Oct 03, 2018 6:44 pm
- Forum: Empirical & Molecular Formulas
- Topic: Fundamental L.39
- Replies: 6
- Views: 417
Re: Fundamental L.39
@AlbertDuong Thank you for that explanation! Completely forgot how to do it and so that was very helpful
- Wed Oct 03, 2018 6:39 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: If we ever have to use dm^3
- Replies: 1
- Views: 182
If we ever have to use dm^3
I used dm^3 alot when I was doing A level chemistry; is what we use for dm^3 just the same as 1000cm^3? I was just confused as it hadn't come up yet
- Wed Oct 03, 2018 6:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Advice from a Medical Student [ENDORSED]
- Replies: 297
- Views: 382939
Re: Advice from a Medical Student [ENDORSED]
Thank you so much for this! Very in-depth explanations of what we need to do to succeed!