Search found 45 matches

by pJimenez3F
Mon Dec 02, 2019 12:05 am
Forum: Sigma & Pi Bonds
Topic: Sigma vs. Pi
Replies: 15
Views: 50

Re: Sigma vs. Pi

Sigma bonds are stronger due to the orbitals overlapping
by pJimenez3F
Mon Dec 02, 2019 12:04 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Cis vs Trans
Replies: 21
Views: 97

Re: Cis vs Trans

Cis molecules are polar , trans molecules are nonpolar.
by pJimenez3F
Mon Dec 02, 2019 12:03 am
Forum: Determining Molecular Shape (VSEPR)
Topic: T-shape
Replies: 21
Views: 56

Re: T-shape

2 lone pairs and 3 bonded atoms
by pJimenez3F
Mon Dec 02, 2019 12:01 am
Forum: Lewis Acids & Bases
Topic: Definition
Replies: 7
Views: 27

Re: Definition

Lewis acid is an electron-pair acceptor and a Lewis base is an electron-pair donor.
by pJimenez3F
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: 19

Re: Bond strength and strength of acid.

weaker/longer the bond the stronger the acid
by pJimenez3F
Sun Nov 24, 2019 11:34 pm
Forum: Hybridization
Topic: sigma or pi?
Replies: 20
Views: 78

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.
by pJimenez3F
Sun Nov 24, 2019 11:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Final
Replies: 10
Views: 35

Re: Final

yes it is
by pJimenez3F
Sun Nov 24, 2019 11:32 pm
Forum: Hybridization
Topic: d orbital
Replies: 4
Views: 25

Re: d orbital

because it is an a lower energy level
by pJimenez3F
Sun Nov 24, 2019 11:30 pm
Forum: Student Social/Study Group
Topic: Class Grading
Replies: 35
Views: 357

Re: Class Grading

yes correct
by pJimenez3F
Sun Nov 24, 2019 11:29 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2 Grades
Replies: 10
Views: 73

Re: Test 2 Grades

probably after lecture on Wednesday since not all of us have discussion week 9
by pJimenez3F
Sun Nov 24, 2019 11:27 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-shape
Replies: 21
Views: 56

Re: T-shape

2 lone pairs and 3 bonded atoms
by pJimenez3F
Sun Nov 24, 2019 11:26 pm
Forum: Resonance Structures
Topic: Resonance and Naming
Replies: 11
Views: 30

Re: Resonance and Naming

no its doesn't at least for this course
by pJimenez3F
Sun Nov 24, 2019 11:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs on Cenrtral Atom
Replies: 11
Views: 33

Re: Lone Pairs on Cenrtral Atom

they push the attached bonds away
by pJimenez3F
Sun Nov 24, 2019 11:25 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: AXE Format
Replies: 34
Views: 100

Re: AXE Format

the one is not needed
by pJimenez3F
Sun Nov 24, 2019 11:24 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 7
Views: 26

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
by pJimenez3F
Sun Nov 10, 2019 10:30 pm
Forum: Student Social/Study Group
Topic: Midterm Grades
Replies: 7
Views: 73

Re: Midterm Grades

maybe Wednesday since we don't have class on Monday
by pJimenez3F
Sun Nov 10, 2019 10:28 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 90
Views: 19207

Re: Final Jitters

I like to think of doing tests as doing hw in my room
by pJimenez3F
Sun Nov 10, 2019 10:27 pm
Forum: *Black Body Radiation
Topic: Info for Midterm
Replies: 7
Views: 93

Re: Info for Midterm

nothing it won't be tested on
by pJimenez3F
Sun Nov 10, 2019 10:20 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 11
Views: 85

Re: Final

ye it is on Sunday of week 10
by pJimenez3F
Sun Nov 10, 2019 10:18 pm
Forum: Lewis Structures
Topic: Bonds
Replies: 4
Views: 16

Re: Bonds

because the strength and length changes depending on whether it is a single double or triple bond
by pJimenez3F
Sun Nov 03, 2019 7:02 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg equation
Replies: 3
Views: 38

Re: Rydberg equation

when pure working with energy levels. Absorption vs Emission
by pJimenez3F
Sun Nov 03, 2019 6:01 pm
Forum: Bond Lengths & Energies
Topic: Next Lecture
Replies: 3
Views: 20

Re: Next Lecture

yeah he made class into a review session
by pJimenez3F
Sun Nov 03, 2019 6:00 pm
Forum: *Black Body Radiation
Topic: Info for Midterm
Replies: 7
Views: 93

Re: Info for Midterm

Lavelle didn't cover this in class or homework, it won't be tested on
by pJimenez3F
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: 6
Views: 27

Re: When would 3d orbital be filled before the 4s orbital?

You usually always fill 4s before 3d except for Cr and Cu
by pJimenez3F
Sun Nov 03, 2019 5:56 pm
Forum: Bond Lengths & Energies
Topic: Single bond vs double bond
Replies: 14
Views: 100

Re: Single bond vs double bond

the length of the bonds single bonds are longer since they are not as strong as double bonds
by pJimenez3F
Sun Oct 27, 2019 8:59 pm
Forum: Electronegativity
Topic: Radius
Replies: 13
Views: 414

Re: Radius

electronegativity decreases as radius increases
by pJimenez3F
Sun Oct 27, 2019 8:54 pm
Forum: Lewis Structures
Topic: Drawing Lewis Structures
Replies: 5
Views: 23

Re: Drawing Lewis Structures

they basically represent the valence electrons and there is eight of them
by pJimenez3F
Sun Oct 27, 2019 8:20 pm
Forum: Bond Lengths & Energies
Topic: Single bond vs double bond
Replies: 14
Views: 100

Re: Single bond vs double bond

the length of the bonds single bonds are longer since they are not as strong as double bonds
by pJimenez3F
Sun Oct 27, 2019 8:18 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonds
Replies: 14
Views: 56

Re: Covalent Bonds

yes it is only between non metals
by pJimenez3F
Sun Oct 27, 2019 8:17 pm
Forum: Ionic & Covalent Bonds
Topic: Homework
Replies: 13
Views: 100

Re: Homework

i would do 3 chemical bonds and 2 quantum from what we talked last week :)
by pJimenez3F
Sun Oct 20, 2019 11:15 pm
Forum: General Science Questions
Topic: Test #1
Replies: 6
Views: 44

Re: Test #1

there is never a time because you are trying to get a percentage
by pJimenez3F
Sun Oct 20, 2019 11:13 pm
Forum: Properties of Light
Topic: What are the units of hertz
Replies: 41
Views: 213

Re: What are the units of hertz

Hz, S-1, cycles per second they all mean the same thing
by pJimenez3F
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: 72

Re: Why is 4s before 3d?

because 4s is more easily filled up
by pJimenez3F
Sun Oct 20, 2019 11:04 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent
Replies: 29
Views: 319

Re: Ionic vs Covalent

usually ionic bonds are stronger but there are some exceptions
by pJimenez3F
Sun Oct 20, 2019 11:03 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7726
Views: 1044913

Re: Post All Chemistry Jokes Here

What did the other elements say to Hydrogen?

HAHA WHAT A LONER
by pJimenez3F
Sun Oct 13, 2019 10:57 pm
Forum: Balancing Chemical Reactions
Topic: Writing Out Reactions
Replies: 6
Views: 42

Re: Writing Out Reactions

For now just combustion and probably common compound like sodium chloride for example
by pJimenez3F
Sun Oct 13, 2019 10:56 pm
Forum: Properties of Light
Topic: Atomic Spectra
Replies: 3
Views: 21

Re: Atomic Spectra

for this week at least I think thats enough until we use the other levels (if we do)
by pJimenez3F
Sun Oct 13, 2019 10:55 pm
Forum: Properties of Electrons
Topic: Energy/Light Levels
Replies: 2
Views: 12

Re: Energy/Light Levels

I dont think you need to worry about that yet
by pJimenez3F
Sun Oct 13, 2019 6:26 pm
Forum: Balancing Chemical Reactions
Topic: Combustion
Replies: 17
Views: 155

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
by pJimenez3F
Fri Oct 04, 2019 2:31 am
Forum: Molarity, Solutions, Dilutions
Topic: Converting Before or After?
Replies: 10
Views: 55

Re: Converting Before or After?

if youre doing everything right it should cancel out to the right units at the end :)
by pJimenez3F
Fri Oct 04, 2019 2:27 am
Forum: Limiting Reactant Calculations
Topic: Percent or theoretical yield
Replies: 14
Views: 117

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
by pJimenez3F
Fri Oct 04, 2019 2:25 am
Forum: SI Units, Unit Conversions
Topic: Etext Access for Chem Book
Replies: 3
Views: 45

Re: Etext Access for Chem Book

i had the same thing happen to me !
by pJimenez3F
Fri Oct 04, 2019 2:24 am
Forum: Limiting Reactant Calculations
Topic: Limiting Reactants
Replies: 2
Views: 24

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
by pJimenez3F
Fri Oct 04, 2019 2:22 am
Forum: Significant Figures
Topic: Sig Figs
Replies: 3
Views: 30

Re: Sig Figs

there is 3 :)

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