Search found 32 matches
- Sat Dec 08, 2018 4:15 pm
- Forum: Biological Examples
- Topic: Guanine [ENDORSED]
- Replies: 2
- Views: 694
Re: Guanine [ENDORSED]
The guanine binds to the lone pair on the nitrogen atom
- Sat Dec 08, 2018 4:10 pm
- Forum: Amphoteric Compounds
- Topic: polydentate
- Replies: 4
- Views: 660
Re: polydentate
monodentate is a ligand that binds in one place to the transition metal. Polydentate is a ligand that binds in more than one place to the transition metal.
- Sat Dec 08, 2018 4:08 pm
- Forum: Polyprotic Acids & Bases
- Topic: Significance of Polyprotic Acids & Bases
- Replies: 6
- Views: 1001
Re: Significance of Polyprotic Acids & Bases
Just know that they donate more than one hydrogen
- Sat Dec 08, 2018 3:55 pm
- Forum: *Molecular Orbital Theory Applied To Transition Metals
- Topic: Transition Metals
- Replies: 5
- Views: 1839
Re: Transition Metals
Transition metals are in the d block so they have electrons they can adopt electrons with more than one charge
- Sat Dec 08, 2018 3:50 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 12
- Views: 1699
Re: Final
Good point Manas
- Sun Dec 02, 2018 2:05 pm
- Forum: Bronsted Acids & Bases
- Topic: Proton "Donation"
- Replies: 4
- Views: 514
Re: Proton "Donation"
The proton they are referring to is the hydrogen ion.
- Sun Dec 02, 2018 2:03 pm
- Forum: Student Social/Study Group
- Topic: curve?
- Replies: 20
- Views: 3020
Re: curve?
There is no curve in the class
- Sun Dec 02, 2018 2:01 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 12
- Views: 1699
Re: Final
The email he sent out said that the topics in lecture will be tested equally.
- Sat Nov 24, 2018 8:50 pm
- Forum: Hybridization
- Topic: reason for hybridization
- Replies: 9
- Views: 10211
Re: reason for hybridization
Hybridized orbitals have less energy than the unhybridized orbitals. The compound is more stable when hybridization occurs.
- Sat Nov 24, 2018 8:48 pm
- Forum: Hybridization
- Topic: double bonds
- Replies: 14
- Views: 1242
Re: double bonds
A double bond consists of a pi bond and a sigma bond.
- Sat Nov 24, 2018 8:47 pm
- Forum: Hybridization
- Topic: Test 3
- Replies: 13
- Views: 1181
Re: Test 3
The test covers everything up to Monday's lecture even if your discussion is on Tuesday.
- Sun Nov 18, 2018 2:48 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 16
- Views: 1224
Re: Bond Angles
In regards to bond angles affected by electron electron repulsion, we don't need to know the exact angles of those angles. Just know that repulsion reduces bond angles.
- Sun Nov 18, 2018 2:46 pm
- Forum: Dipole Moments
- Topic: Polarity and dipole moment
- Replies: 4
- Views: 529
Re: Polarity and dipole moment
Symmteric molecules are nonpolar in nature. Unsymmetric molecules are polar in nature.
- Sun Nov 18, 2018 2:45 pm
- Forum: Hybridization
- Topic: Bond Angles
- Replies: 12
- Views: 1151
Re: Bond Angles
It's important to know that more electron electron repulsions lead to reduced bond angles.
- Sat Nov 10, 2018 2:14 pm
- Forum: General Science Questions
- Topic: Midterm studying
- Replies: 10
- Views: 1462
Re: Midterm studying
Going over practice midterms are the best way to study for the midterm.
- Sat Nov 10, 2018 2:13 pm
- Forum: General Science Questions
- Topic: Khan Academy
- Replies: 10
- Views: 1556
Re: Khan Academy
Khan Academy AP Chem section is great for reviewing certain topics.
- Sat Nov 10, 2018 2:11 pm
- Forum: Resonance Structures
- Topic: Most Stable Configuration
- Replies: 11
- Views: 1198
Re: Most Stable Configuration
The most stable configuration is when all the formal charges add up to 0.
- Sun Nov 04, 2018 1:34 am
- Forum: Properties of Light
- Topic: Standard Units
- Replies: 8
- Views: 809
Re: Standard Units
Wavelength is measured in m. Many questions give the measurements in nanometers so don't forget to convert to meters.
- Sun Nov 04, 2018 1:33 am
- Forum: Resonance Structures
- Topic: Resonance structures on the midterm
- Replies: 3
- Views: 447
Re: Resonance structures on the midterm
They will probably ask for the most stable resonance form.
- Sun Nov 04, 2018 1:29 am
- Forum: Administrative Questions and Class Announcements
- Topic: What the Midterm Will Cover
- Replies: 5
- Views: 484
Re: What the Midterm Will Cover
Going over the exercises in the book will help prepare for the exam.
- Mon Oct 29, 2018 12:47 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Copper exception
- Replies: 4
- Views: 392
Re: Copper exception
An entire 3d subshell that is full is stable instead of having 2 electrons in the 4s and 9 electrons in the 3d orbital
- Mon Oct 29, 2018 12:39 am
- Forum: Lewis Structures
- Topic: Lines that Represent Bonds
- Replies: 7
- Views: 621
Re: Lines that Represent Bonds
Lines are usually standard to represent bonds between atoms.
- Mon Oct 29, 2018 12:38 am
- Forum: Ionic & Covalent Bonds
- Topic: Covalent Bonds
- Replies: 16
- Views: 1622
Re: Covalent Bonds
Nonmetals usually need a few electrons to complete a stable shell. Thus, they usually become anions.
- Sun Oct 21, 2018 11:51 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Wave Functions
- Replies: 4
- Views: 401
Re: Wave Functions
The De Broglie equation works for any particle that has a mass when the momentum is 0. Since photons never have 0 momentum, you can't use this equation for such particles.
- Sun Oct 21, 2018 11:42 pm
- Forum: DeBroglie Equation
- Topic: Rest Mass
- Replies: 7
- Views: 713
Re: Rest Mass
You can only use the equation on objects that have a mass when their momentum is 0.
- Sun Oct 21, 2018 11:36 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: What is the equation used for?
- Replies: 9
- Views: 870
Re: What is the equation used for?
The equation is used to determine the uncertainty in position and momentum since we can't determine the exact position of an electron like we can normal everyday objects like a baseball.
- Tue Oct 16, 2018 10:05 am
- Forum: Photoelectric Effect
- Topic: Threshold energy [ENDORSED]
- Replies: 17
- Views: 2180
Re: Threshold energy [ENDORSED]
The energy of the photon must be greater than the threshold energy in order to eject electrons and have them be detected.
- Tue Oct 16, 2018 10:03 am
- Forum: Properties of Electrons
- Topic: Electron Question
- Replies: 6
- Views: 595
Re: Electron Question
The energy of the electron is quantized. Thus, it can only take certain discrete energy levels.
- Tue Oct 16, 2018 10:01 am
- Forum: Properties of Light
- Topic: Mass
- Replies: 4
- Views: 265
Re: Mass
Light is not a stationary particle. Therefore, we do not assign a value to its mass.
- Sun Oct 07, 2018 5:04 pm
- Forum: Balancing Chemical Reactions
- Topic: Mole Coefficients in Chemical Equations
- Replies: 6
- Views: 743
Re: Mole Coefficients in Chemical Equations
Balancing equations deals simply with making sure that the number of atoms are equal one both sides of the equation. This is based on the law of conservation of mass, which means that atoms can neither be created or destroyed.
- Sun Oct 07, 2018 4:59 pm
- Forum: Limiting Reactant Calculations
- Topic: Calculating Molar Mass in Limiting Reactant Problem
- Replies: 3
- Views: 440
Re: Calculating Molar Mass in Limiting Reactant Problem
The final question dealt with calculating the yield of ethyne. Thus, there is no need to calculate the molar mass of calcium hydroxide.
- Sun Oct 07, 2018 4:50 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Advice from a Medical Student [ENDORSED]
- Replies: 297
- Views: 408578
Re: Advice from a Medical Student [ENDORSED]
Thank you so much for this advice! Very helpful for first years taking this course