Search found 53 matches

by Katherine Chhen 3I
Fri Dec 06, 2019 1:31 pm
Forum: *Titrations & Titration Calculations
Topic: Titration
Replies: 1
Views: 45

Titration

Just to clarify, what are we expected to know regarding titration for the final?
by Katherine Chhen 3I
Fri Dec 06, 2019 1:27 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: biological importance
Replies: 2
Views: 29

biological importance

Are we expected to know the biological importance of certain coordination compounds for the finals?
by Katherine Chhen 3I
Fri Dec 06, 2019 1:26 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: naming of coordination compounds
Replies: 1
Views: 22

naming of coordination compounds

Are there any shortcuts to help with naming a coordination compound? Or other resources since I am still having trouble.
by Katherine Chhen 3I
Fri Dec 06, 2019 1:23 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: structure
Replies: 1
Views: 24

structure

How would we be able to draw coordination compounds when we are given the name of it?
by Katherine Chhen 3I
Fri Dec 06, 2019 1:22 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Linear VSEPR model
Replies: 21
Views: 177

Re: Linear VSEPR model

Kaitlynn Tran 3F wrote:If it has 0, 3, or 4 lone pairs, the molecular shape will be linear. However, if it has 1 or 2 lone pairs, the molecular shape will be bent.

Ohh okay, thank you!
by Katherine Chhen 3I
Fri Dec 06, 2019 1:19 pm
Forum: Amphoteric Compounds
Topic: how to identify?
Replies: 5
Views: 102

Re: how to identify?

Would any other elements make the compound amphoteric too?
by Katherine Chhen 3I
Thu Nov 28, 2019 10:10 am
Forum: Lewis Acids & Bases
Topic: When is an acid considered Bronsted?
Replies: 9
Views: 70

Re: When is an acid considered Bronsted?

How would we be able to tell which is a Bronsted or Lewis acid/base?
by Katherine Chhen 3I
Thu Nov 28, 2019 10:04 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Strength and Weakness
Replies: 12
Views: 348

Re: Strength and Weakness

Would the pKa and Ka values be given or would we have to calculate that ourselves?
by Katherine Chhen 3I
Thu Nov 28, 2019 10:02 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Concentration
Replies: 2
Views: 31

Concentration

How would we be able to determine the concentration of the H and OH ions within a solution?
by Katherine Chhen 3I
Thu Nov 28, 2019 9:59 am
Forum: Determining Molecular Shape (VSEPR)
Topic: molecular shape
Replies: 8
Views: 57

Re: molecular shape

Would we need to draw the Lewis structure with the correct formal charge in order to determine the molecular shape? Or can we just draw a general Lewis structure?
by Katherine Chhen 3I
Thu Nov 28, 2019 9:58 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Week 9 homework
Replies: 11
Views: 108

Re: Week 9 homework

My TA said that he’ll collect both homework during week 10 discussion!
by Katherine Chhen 3I
Thu Nov 28, 2019 9:56 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Linear VSEPR model
Replies: 21
Views: 177

Re: Linear VSEPR model

Ohh so only the number of atoms bound to the central atom determines the molecular shape.
by Katherine Chhen 3I
Sat Nov 23, 2019 10:41 am
Forum: Administrative Questions and Class Announcements
Topic: finals
Replies: 5
Views: 62

finals

Would the finals be on topics mostly after the midterm and test 2 or would the topics on the finals be evenly distributed?
by Katherine Chhen 3I
Sat Nov 23, 2019 10:37 am
Forum: Naming
Topic: transition metals
Replies: 2
Views: 33

transition metals

Is the naming of coordination compounds only for transition metals or can it also be for other compounds too?
by Katherine Chhen 3I
Sat Nov 23, 2019 10:35 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs linear
Replies: 56
Views: 445

Re: Bent vs linear

AX2E3 has 3 lone pairs however it is still considered linear on the handout that we were given in discussion.
by Katherine Chhen 3I
Thu Nov 21, 2019 12:04 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs linear
Replies: 56
Views: 445

Re: Bent vs linear

What about AX2E3 since it is linear and not bent?
by Katherine Chhen 3I
Thu Nov 21, 2019 11:53 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs linear
Replies: 56
Views: 445

Bent vs linear

How would I be able to distinguish between a shape that is bent or linear since they both have 2 bonded atoms?
by Katherine Chhen 3I
Wed Nov 13, 2019 2:00 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Linear VSEPR model
Replies: 21
Views: 177

Re: Linear VSEPR model

So the number of lone pairs can also determine the molecular shape of a molecule?
by Katherine Chhen 3I
Wed Nov 13, 2019 1:54 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shape Name
Replies: 17
Views: 169

Re: Molecular Shape Name

Would there be an easier way to memorize all the shape names or how to determine which molecule has what shape?
by Katherine Chhen 3I
Wed Nov 13, 2019 1:50 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Week 9 homework
Replies: 11
Views: 108

Week 9 homework

Since week 9 is thanksgiving break and I have discussion on Thursday, would homework still be due for that week?
by Katherine Chhen 3I
Wed Nov 13, 2019 1:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Topics on Outlines for Test 2
Replies: 3
Views: 36

Re: Topics on Outlines for Test 2

Also, would test 2 be cumulative or just the material after the midterm?
by Katherine Chhen 3I
Wed Nov 13, 2019 1:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: molecular shape
Replies: 8
Views: 57

molecular shape

Based on the lewis structure, how are we able to determine the molecular shape since the lewis structure is only 2-D?
by Katherine Chhen 3I
Sun Nov 10, 2019 7:59 pm
Forum: Electronegativity
Topic: Ionization energy and electronegativity
Replies: 8
Views: 40

Re: Ionization energy and electronegativity

Would the ionization and electronegativity trend be the same on the periodic table?
by Katherine Chhen 3I
Sun Nov 10, 2019 7:57 pm
Forum: Bond Lengths & Energies
Topic: Bond Shape
Replies: 3
Views: 53

Re: Bond Shape

The unequal sharing of electrons will result in one atom to have a partial negative and the other atom to have a partial positive and this would cause the molecule to be polar.
by Katherine Chhen 3I
Sun Nov 10, 2019 7:54 pm
Forum: Electronegativity
Topic: dipole moments
Replies: 7
Views: 36

dipole moments

Does the difference in electronegativity determine if a molecule has dipole moments?
by Katherine Chhen 3I
Sun Nov 10, 2019 7:53 pm
Forum: Bond Lengths & Energies
Topic: bond lengths
Replies: 3
Views: 31

bond lengths

How do we determine the bond lengths between different atoms? Also, are we supposed to know if a bond length between 2 atoms are longer or shorter than the bond length between another 2 atoms?
by Katherine Chhen 3I
Sun Nov 10, 2019 7:49 pm
Forum: Dipole Moments
Topic: arrows for dipole moments
Replies: 3
Views: 20

arrows for dipole moments

How do we determine which way the dipole moments are drawn?
by Katherine Chhen 3I
Thu Oct 31, 2019 1:19 pm
Forum: Lewis Structures
Topic: valence electrons
Replies: 4
Views: 59

valence electrons

What are the trends for valence electrons?
by Katherine Chhen 3I
Thu Oct 31, 2019 1:17 pm
Forum: Electronegativity
Topic: Electronegativity difference
Replies: 2
Views: 18

Electronegativity difference

Are we expected to know the element's electronegativity? If not, how would we know the difference to tell if a molecule bonds through covalent or ionic bonds?
by Katherine Chhen 3I
Thu Oct 31, 2019 1:15 pm
Forum: Lewis Structures
Topic: octet exceptions
Replies: 5
Views: 39

octet exceptions

How would we know if a molecule is an exception to the octet rule?
by Katherine Chhen 3I
Thu Oct 31, 2019 1:13 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge equation
Replies: 9
Views: 55

Formal Charge equation

I know that the formal charge equation is FC=V-(L+S/2), but my TA taught us FC=V-(L+B), with B representing the bond length, is this equation essentially the same?
by Katherine Chhen 3I
Thu Oct 31, 2019 1:09 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: electron shells
Replies: 1
Views: 18

electron shells

How would I be able to tell if the electrons within an electron shell are paired or unpaired?
by Katherine Chhen 3I
Fri Oct 25, 2019 5:46 pm
Forum: Bond Lengths & Energies
Topic: Bond length strength
Replies: 6
Views: 71

Bond length strength

How are we able to determine the strength of different bonds?
by Katherine Chhen 3I
Fri Oct 25, 2019 5:45 pm
Forum: Ionic & Covalent Bonds
Topic: Identifying Ionic vs Covalent
Replies: 7
Views: 64

Re: Identifying Ionic vs Covalent

Julia Mazzucato 4D wrote:We will also be able to look at formal charges within the molecule to determine polarity of a covalent bond.

How would we be able to determine the polarity of a covalent bond using formal charges?
by Katherine Chhen 3I
Fri Oct 25, 2019 5:41 pm
Forum: Octet Exceptions
Topic: Resonance structures
Replies: 5
Views: 38

Resonance structures

For a compound, would the best way to represent it in Lewis structures is to draw out every structure and use double headed arrows?
by Katherine Chhen 3I
Fri Oct 25, 2019 5:29 pm
Forum: Octet Exceptions
Topic: Formal Charge
Replies: 2
Views: 30

Formal Charge

Would adding a triple bond help make the compound more stable in terms of formal charge or are double bonds usually the best way to make the lewis structures more stable?
by Katherine Chhen 3I
Fri Oct 25, 2019 5:26 pm
Forum: Resonance Structures
Topic: Lewis Structures
Replies: 3
Views: 31

Lewis Structures

How would we be able to know how many Lewis structures(resonance) a compound has?
by Katherine Chhen 3I
Fri Oct 18, 2019 8:24 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: electrostatic (coulomb) potential energy [ENDORSED]
Replies: 3
Views: 48

electrostatic (coulomb) potential energy [ENDORSED]

When would the coulomb potential energy equation be applied and what does the result represent?
by Katherine Chhen 3I
Fri Oct 18, 2019 8:14 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: How to Name Electron Configurations
Replies: 5
Views: 31

Re: How to Name Electron Configurations

I believe you use previous elements on the periodic table when the question asks for a noble gas configuration.
by Katherine Chhen 3I
Fri Oct 18, 2019 8:12 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: electron spin arrows
Replies: 6
Views: 37

electron spin arrows

How would we know if an electron is paired or parallel within a shell?
by Katherine Chhen 3I
Fri Oct 18, 2019 8:09 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Hund's rule and Pauli Exclusion Principle
Replies: 14
Views: 112

Hund's rule and Pauli Exclusion Principle

What is the relationship between Hund's rule and the Pauli Exclusion principle?
by Katherine Chhen 3I
Fri Oct 18, 2019 8:07 pm
Forum: *Shrodinger Equation
Topic: Schrodinger for exam
Replies: 9
Views: 160

Schrodinger for exam

Would we need to know the schrodinger equation conceptually for an exam?
by Katherine Chhen 3I
Sat Oct 12, 2019 2:53 pm
Forum: Properties of Light
Topic: Constructive & Destructive
Replies: 4
Views: 44

Re: Constructive & Destructive

For destructive interference, would it be possible for the two waves to be equal to each other so that they cancel out or does the “negative” have to be smaller than the “positive” wave?
by Katherine Chhen 3I
Sat Oct 12, 2019 2:48 pm
Forum: DeBroglie Equation
Topic: De Broglie equation
Replies: 5
Views: 37

De Broglie equation

Within the De Broglie’s equation, why does the mass have to be in kg instead of grams?
by Katherine Chhen 3I
Sat Oct 12, 2019 2:43 pm
Forum: Photoelectric Effect
Topic: Threshold energy
Replies: 6
Views: 50

Re: Threshold energy

Thank you for the clarification!
by Katherine Chhen 3I
Wed Oct 09, 2019 12:26 pm
Forum: Photoelectric Effect
Topic: Threshold energy
Replies: 6
Views: 50

Threshold energy

Is the threshold energy a set number or would the threshold energy vary depending on the problem?
by Katherine Chhen 3I
Wed Oct 09, 2019 12:21 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 3259

Re: Test 1 [ENDORSED]

Will the equations also be provided for us on the test?
by Katherine Chhen 3I
Wed Oct 09, 2019 12:20 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Light energy
Replies: 3
Views: 52

Light energy

Are we required to memorize which wavelength of light corresponds to where on the EM spectrum?
by Katherine Chhen 3I
Sat Oct 05, 2019 9:02 am
Forum: Significant Figures
Topic: Rules for Significant Figures
Replies: 4
Views: 84

Rules for Significant Figures

Can someone explain the rules regarding significant figures?
by Katherine Chhen 3I
Sat Oct 05, 2019 9:01 am
Forum: Balancing Chemical Reactions
Topic: Compound names
Replies: 11
Views: 117

Re: Compound names

How would we know what the chemical formula is when given the compound names?
by Katherine Chhen 3I
Tue Oct 01, 2019 3:32 pm
Forum: Limiting Reactant Calculations
Topic: Finding limiting reagent
Replies: 6
Views: 334

Re: Finding limiting reagent

Can someone clarify on how to do the mole to mole ratio in order to find the limiting reagent?
by Katherine Chhen 3I
Tue Oct 01, 2019 3:29 pm
Forum: Molarity, Solutions, Dilutions
Topic: Conversion for the example dilution problem done in class on Monday
Replies: 2
Views: 55

Conversion for the example dilution problem done in class on Monday

Since the problem was in milliliters, would our answer also have to be in milliliters or can we leave our answer in liters?
by Katherine Chhen 3I
Tue Oct 01, 2019 3:25 pm
Forum: SI Units, Unit Conversions
Topic: SI units for exam
Replies: 6
Views: 72

SI units for exam

Are we required to put the correct number of significant figures for the exam to get full credit?

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