Search found 45 matches
- Mon Dec 02, 2019 12:05 am
- Forum: Sigma & Pi Bonds
- Topic: Sigma vs. Pi
- Replies: 20
- Views: 1335
Re: Sigma vs. Pi
Sigma bonds are stronger due to the orbitals overlapping
- Mon Dec 02, 2019 12:04 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Cis vs Trans
- Replies: 22
- Views: 1784
Re: Cis vs Trans
Cis molecules are polar , trans molecules are nonpolar.
- Mon Dec 02, 2019 12:03 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: T-shape
- Replies: 21
- Views: 1761
Re: T-shape
2 lone pairs and 3 bonded atoms
- Mon Dec 02, 2019 12:01 am
- Forum: Lewis Acids & Bases
- Topic: Definition
- Replies: 7
- Views: 583
Re: Definition
Lewis acid is an electron-pair acceptor and a Lewis base is an electron-pair donor.
- Mon Dec 02, 2019 12:00 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Bond strength and strength of acid.
- Replies: 6
- Views: 452
Re: Bond strength and strength of acid.
weaker/longer the bond the stronger the acid
- Sun Nov 24, 2019 11:34 pm
- Forum: Hybridization
- Topic: sigma or pi?
- Replies: 20
- Views: 1198
Re: sigma or pi?
a single bond, is sigma, if it is a double bond, it is sigma and pi and if there is a triple bond then it is one sigma two pi.
- Sun Nov 24, 2019 11:33 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Final
- Replies: 10
- Views: 603
Re: Final
yes it is
- Sun Nov 24, 2019 11:32 pm
- Forum: Hybridization
- Topic: d orbital
- Replies: 4
- Views: 325
Re: d orbital
because it is an a lower energy level
- Sun Nov 24, 2019 11:30 pm
- Forum: Student Social/Study Group
- Topic: Class Grading
- Replies: 44
- Views: 3870
Re: Class Grading
yes correct
- Sun Nov 24, 2019 11:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 2 Grades
- Replies: 10
- Views: 691
Re: Test 2 Grades
probably after lecture on Wednesday since not all of us have discussion week 9
- Sun Nov 24, 2019 11:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: T-shape
- Replies: 21
- Views: 1761
Re: T-shape
2 lone pairs and 3 bonded atoms
- Sun Nov 24, 2019 11:26 pm
- Forum: Resonance Structures
- Topic: Resonance and Naming
- Replies: 11
- Views: 896
Re: Resonance and Naming
no its doesn't at least for this course
- Sun Nov 24, 2019 11:26 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pairs on Cenrtral Atom
- Replies: 11
- Views: 672
Re: Lone Pairs on Cenrtral Atom
they push the attached bonds away
- Sun Nov 24, 2019 11:25 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: AXE Format
- Replies: 34
- Views: 1307
Re: AXE Format
the one is not needed
- Sun Nov 24, 2019 11:24 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 7
- Views: 506
Re: Bond Angles
because we can't calculate the exact angle but we can estimate it based on it compared to something else. for example a line has a 180 degree angle and if there were to be an angle slightly smaller than a line it would just be <180
- Sun Nov 10, 2019 10:30 pm
- Forum: Student Social/Study Group
- Topic: Midterm Grades
- Replies: 7
- Views: 571
Re: Midterm Grades
maybe Wednesday since we don't have class on Monday
- Sun Nov 10, 2019 10:28 pm
- Forum: Student Social/Study Group
- Topic: Final Jitters
- Replies: 457
- Views: 418417
Re: Final Jitters
I like to think of doing tests as doing hw in my room
- Sun Nov 10, 2019 10:27 pm
- Forum: *Black Body Radiation
- Topic: Info for Midterm
- Replies: 13
- Views: 1181
Re: Info for Midterm
nothing it won't be tested on
- Sun Nov 10, 2019 10:20 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 11
- Views: 821
Re: Final
ye it is on Sunday of week 10
- Sun Nov 10, 2019 10:18 pm
- Forum: Lewis Structures
- Topic: Bonds
- Replies: 4
- Views: 211
Re: Bonds
because the strength and length changes depending on whether it is a single double or triple bond
- Sun Nov 03, 2019 7:02 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg equation
- Replies: 3
- Views: 286
Re: Rydberg equation
when pure working with energy levels. Absorption vs Emission
- Sun Nov 03, 2019 6:01 pm
- Forum: Bond Lengths & Energies
- Topic: Next Lecture
- Replies: 3
- Views: 283
Re: Next Lecture
yeah he made class into a review session
- Sun Nov 03, 2019 6:00 pm
- Forum: *Black Body Radiation
- Topic: Info for Midterm
- Replies: 13
- Views: 1181
Re: Info for Midterm
Lavelle didn't cover this in class or homework, it won't be tested on
- Sun Nov 03, 2019 5:57 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: When would 3d orbital be filled before the 4s orbital?
- Replies: 8
- Views: 534
Re: When would 3d orbital be filled before the 4s orbital?
You usually always fill 4s before 3d except for Cr and Cu
- Sun Nov 03, 2019 5:56 pm
- Forum: Bond Lengths & Energies
- Topic: Single bond vs double bond
- Replies: 14
- Views: 920
Re: Single bond vs double bond
the length of the bonds single bonds are longer since they are not as strong as double bonds
- Sun Oct 27, 2019 8:59 pm
- Forum: Electronegativity
- Topic: Radius
- Replies: 13
- Views: 1623
Re: Radius
electronegativity decreases as radius increases
- Sun Oct 27, 2019 8:54 pm
- Forum: Lewis Structures
- Topic: Drawing Lewis Structures
- Replies: 5
- Views: 203
Re: Drawing Lewis Structures
they basically represent the valence electrons and there is eight of them
- Sun Oct 27, 2019 8:20 pm
- Forum: Bond Lengths & Energies
- Topic: Single bond vs double bond
- Replies: 14
- Views: 920
Re: Single bond vs double bond
the length of the bonds single bonds are longer since they are not as strong as double bonds
- Sun Oct 27, 2019 8:18 pm
- Forum: Ionic & Covalent Bonds
- Topic: Covalent Bonds
- Replies: 14
- Views: 1132
Re: Covalent Bonds
yes it is only between non metals
- Sun Oct 27, 2019 8:17 pm
- Forum: Ionic & Covalent Bonds
- Topic: Homework
- Replies: 13
- Views: 684
Re: Homework
i would do 3 chemical bonds and 2 quantum from what we talked last week :)
- Sun Oct 20, 2019 11:15 pm
- Forum: General Science Questions
- Topic: Test #1
- Replies: 6
- Views: 332
Re: Test #1
there is never a time because you are trying to get a percentage
- Sun Oct 20, 2019 11:13 pm
- Forum: Properties of Light
- Topic: What are the units of hertz
- Replies: 41
- Views: 2227
Re: What are the units of hertz
Hz, S-1, cycles per second they all mean the same thing
- Sun Oct 20, 2019 11:07 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Why is 4s before 3d?
- Replies: 9
- Views: 1010
Re: Why is 4s before 3d?
because 4s is more easily filled up
- Sun Oct 20, 2019 11:04 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic vs Covalent
- Replies: 32
- Views: 43868
Re: Ionic vs Covalent
usually ionic bonds are stronger but there are some exceptions
- Sun Oct 20, 2019 11:03 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890924
Re: Post All Chemistry Jokes Here
What did the other elements say to Hydrogen?
HAHA WHAT A LONER
HAHA WHAT A LONER
- Sun Oct 13, 2019 10:57 pm
- Forum: Balancing Chemical Reactions
- Topic: Writing Out Reactions
- Replies: 6
- Views: 398
Re: Writing Out Reactions
For now just combustion and probably common compound like sodium chloride for example
- Sun Oct 13, 2019 10:56 pm
- Forum: Properties of Light
- Topic: Atomic Spectra
- Replies: 3
- Views: 197
Re: Atomic Spectra
for this week at least I think thats enough until we use the other levels (if we do)
- Sun Oct 13, 2019 10:55 pm
- Forum: Properties of Electrons
- Topic: Energy/Light Levels
- Replies: 2
- Views: 94
Re: Energy/Light Levels
I dont think you need to worry about that yet
- Sun Oct 13, 2019 6:26 pm
- Forum: Balancing Chemical Reactions
- Topic: Combustion
- Replies: 17
- Views: 1086
Re: Combustion
if you see the word combustion you should automatically know that element is reacting with oxygen gas O2 to produce carbon dioxide CO2 and water H2O
- Sun Oct 13, 2019 6:24 pm
- Forum: Administrative Questions and Class Announcements
- Topic: How to check how many points I have this week for posting on Chemistry Community?
- Replies: 11
- Views: 418
Re: How to check how many points I have this week for posting on Chemistry Community?
if you click your username you can see how many posts you have made and when
- Fri Oct 04, 2019 2:31 am
- Forum: Molarity, Solutions, Dilutions
- Topic: Converting Before or After?
- Replies: 10
- Views: 615
Re: Converting Before or After?
if youre doing everything right it should cancel out to the right units at the end :)
- Fri Oct 04, 2019 2:27 am
- Forum: Limiting Reactant Calculations
- Topic: Percent or theoretical yield
- Replies: 14
- Views: 1313
Re: Percent or theoretical yield
yes theoretical is your best case scenario but since you might spill your product or most commonly it might stick to the beaker your percentage yield will be the most accurate guess
- Fri Oct 04, 2019 2:25 am
- Forum: SI Units, Unit Conversions
- Topic: Etext Access for Chem Book
- Replies: 3
- Views: 188
Re: Etext Access for Chem Book
i had the same thing happen to me !
- Fri Oct 04, 2019 2:24 am
- Forum: Limiting Reactant Calculations
- Topic: Limiting Reactants
- Replies: 2
- Views: 165
Re: Limiting Reactants
no you cant work backwards because you need to calculate the ratio of the reactants in regards to each other to determine how much of each you would need to create the products it might be a 6 to 7 ratio of reactants for example and you would not know that if you worked backwards
- Fri Oct 04, 2019 2:22 am
- Forum: Significant Figures
- Topic: Sig Figs
- Replies: 3
- Views: 184
Re: Sig Figs
there is 3 :)