Search found 33 matches
- Fri Dec 07, 2018 11:35 pm
- Forum: Student Social/Study Group
- Topic: Studying for tests/midterm
- Replies: 18
- Views: 1746
Re: Studying for tests/midterm
I would also consider looking up videos on youtube or the ones that Dr. Lavelle has posted on the class website since I found those to be really helpful.
- Fri Dec 07, 2018 11:33 pm
- Forum: Dipole Moments
- Topic: London Dispersion
- Replies: 5
- Views: 619
London Dispersion
If LDFs are supposed to be commonplace and weak, how can they be stronger than dipole-dipole interactions?
- Fri Dec 07, 2018 11:32 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: H20
- Replies: 2
- Views: 166
H20
When discussing coordinate compounds and their charge, why do we say that H20, amongst other molecules, have 0 charge?
- Fri Dec 07, 2018 11:30 pm
- Forum: Naming
- Topic: Week 10 Discussion Notes (3A,3I,3K)
- Replies: 1
- Views: 261
Re: Week 10 Discussion Notes (3A,3I,3K)
Thank you so much!
- Fri Dec 07, 2018 11:28 pm
- Forum: Biological Examples
- Topic: Guanine [ENDORSED]
- Replies: 2
- Views: 470
Guanine [ENDORSED]
Why is it that chlorine only attaches to guanine but none of the other base pairs, like A or T?
- Fri Dec 07, 2018 4:01 pm
- Forum: Biological Examples
- Topic: Ligands
- Replies: 6
- Views: 567
Ligands
What exactly are the roles of ligands in biological processes and what do they connect to in the body?
- Fri Dec 07, 2018 3:59 pm
- Forum: Air Pollution & Acid Rain
- Topic: Acid Rain
- Replies: 3
- Views: 415
Acid Rain
Which molecules in the air have the biggest impact on the development of acid rain?
- Fri Dec 07, 2018 3:58 pm
- Forum: Naming
- Topic: Naming Coordinate Compounds
- Replies: 3
- Views: 215
Naming Coordinate Compounds
Does anyone have any tricks for remembering how to name the compounds other than examining the table?
- Fri Dec 07, 2018 3:56 pm
- Forum: Hybridization
- Topic: The D Orbital
- Replies: 4
- Views: 358
The D Orbital
Once the d orbital is introduced, what kind of bond does it make?
- Fri Dec 07, 2018 3:55 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Conjugate Base versus an Acid
- Replies: 2
- Views: 350
Conjugate Base versus an Acid
Should the conjugate base have a higher Ka than its acid? I saw an example on the board of a study session that implied this. If so, why?
- Fri Dec 07, 2018 3:52 pm
- Forum: Amphoteric Compounds
- Topic: What makes something amphoteric?
- Replies: 6
- Views: 542
What makes something amphoteric?
What exactly gives molecules like H20 their amphoteric properties?
- Fri Dec 07, 2018 3:49 pm
- Forum: Student Social/Study Group
- Topic: curve?
- Replies: 20
- Views: 1848
Re: curve?
I think that there is a slight curve at the end of the class, but there is no curve on individual assignments
- Sun Nov 25, 2018 8:25 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: e- Density
- Replies: 4
- Views: 196
e- Density
Why do we not consider double bonds or triple bonds when calculating regions of e- density and the shape of the molecule?
- Sun Nov 25, 2018 8:22 pm
- Forum: *Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
- Topic: Bonds vs Shapes [ENDORSED]
- Replies: 4
- Views: 569
Bonds vs Shapes [ENDORSED]
Would a change in boiling point, viscosity, etc. be more affected by having stronger bonds, such as a double vs. a single, or is it more related to shape?
- Sun Nov 25, 2018 8:19 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma Bond vs. Pi Bond
- Replies: 2
- Views: 132
Sigma Bond vs. Pi Bond
Why is it that sigma bonds can be rotated while rotation will break a pi bond?
- Sun Nov 25, 2018 8:18 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sigma Bond vs. Pi Bond
- Replies: 3
- Views: 169
Sigma Bond vs. Pi Bond
Why is it that sigma bonds can be rotated but pi bonds are fixed?
- Sun Nov 18, 2018 7:21 pm
- Forum: Resonance Structures
- Topic: Bond Length
- Replies: 4
- Views: 520
Bond Length
If resonance structures mean that the bond lengths will be considered the same, then then in what context do we discuss them in? Is it only relevant to molecules in which resonance structures are not present?
- Sun Nov 18, 2018 7:12 pm
- Forum: Ionic & Covalent Bonds
- Topic: Salts and Molecules
- Replies: 2
- Views: 195
Salts and Molecules
I know that salts have ionic bonds, while molecules have covalent bonds, but I do not exactly understand what properties having these bonds give? As in, what about having an ionic/covalent bond makes something a salt/molecule?
- Sun Nov 18, 2018 7:01 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: Interaction Potential Energy
- Replies: 3
- Views: 232
Interaction Potential Energy
How does distortion effect the interaction potential energy and why does an increasing size or molar mass increase it?
- Sun Nov 11, 2018 3:22 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polar Bonds with Cations and Anions
- Replies: 1
- Views: 216
Polar Bonds with Cations and Anions
Because of their un-neutral charges, are cations and anions more favorable for polar bonds, or does it not make a difference?
- Sun Nov 11, 2018 3:11 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 1
- Views: 221
Bond Angles
Are bond angles shifted during dipole interactions, as in another molecule can change the angle or shape just by being nearby?
- Sun Nov 11, 2018 3:08 am
- Forum: Bond Lengths & Energies
- Topic: Bond Length
- Replies: 9
- Views: 549
Bond Length
Are there cases which a double bond and a single bond can be the same length? Is bond length dependent on what atoms are involved?
- Sun Nov 04, 2018 1:06 pm
- Forum: Electronegativity
- Topic: Electroegativity
- Replies: 9
- Views: 765
Re: Electroegativity
You can look at how many valence shells there are. The more shells, the less electronegative.
- Sun Nov 04, 2018 1:00 pm
- Forum: Lewis Structures
- Topic: Identifying the central atom in ONF
- Replies: 3
- Views: 242
Re: Identifying the central atom in ONF
I believe it also has to do with which atom is the least electronegative, which in this case would be Nitrogen
- Thu Oct 25, 2018 7:36 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Balmer Series?
- Replies: 1
- Views: 122
Re: Balmer Series?
They are a series of spectral emission lines of a hydrogen atom that went from a higher energy level to a lower one. It is calculated by using the empirical equation.
- Thu Oct 25, 2018 6:52 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Difference in energy between s-, p-, d-, f- orbitals in the same shell
- Replies: 2
- Views: 182
Re: Difference in energy between s-, p-, d-, f- orbitals in the same shell
I think there is more shielding in the p- orbitals and up. Electrons in the s- orbital cause the shielding to the other orbitals. Since they are closer to the nucleus, they block some of the pull to the other electrons, so the electrons in the other orbitals are as a result at a higher energy level.
- Thu Oct 25, 2018 5:08 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Cation/Anion Electron Configuration
- Replies: 2
- Views: 141
Cation/Anion Electron Configuration
For the electron configuration cations and anions, will we be told what element it is supposed to be for a problem since cations and anions share electron configurations with other elements?
- Fri Oct 19, 2018 4:59 pm
- Forum: Photoelectric Effect
- Topic: Photoelectric Effect
- Replies: 1
- Views: 115
Photoelectric Effect
When we calculate the energy of a photon, do we include kinetic energy every time, and why or why not?
- Fri Oct 19, 2018 4:54 pm
- Forum: Photoelectric Effect
- Topic: Energy Levels
- Replies: 2
- Views: 167
Re: Energy Levels
I believe that part of the reason there is such a big gap initially is that the electrons have a stronger pull to the nucleus because it is so close in n=1, so it requires more energy to remove the electron. As the n increases, there is less pull along with greater shielding, so it requires less ene...
- Fri Oct 19, 2018 4:50 pm
- Forum: Photoelectric Effect
- Topic: The Photoelectric Effect
- Replies: 3
- Views: 125
The Photoelectric Effect
In what kind of a situation would we want to eject electrons, and what are the exact results of this?
- Fri Oct 12, 2018 1:05 pm
- Forum: Empirical & Molecular Formulas
- Topic: Compound Names
- Replies: 9
- Views: 548
Re: Compound Names
He said we will need to know once he teaches us to name them, but until then, we will be provided with it
- Fri Oct 12, 2018 1:01 pm
- Forum: Balancing Chemical Reactions
- Topic: L39, TB 6th Edition
- Replies: 1
- Views: 297
L39, TB 6th Edition
Can someone explain L39 from the TB 6th edition?
- Thu Oct 11, 2018 9:46 pm
- Forum: SI Units, Unit Conversions
- Topic: TB 6th Edition E9 Part C
- Replies: 1
- Views: 155
TB 6th Edition E9 Part C
When it asks to find the amount of moles of H2O in the Epson salts, why do we multiply 7*(5.15 g/246.48 g*mol-1)?