Search found 50 matches

by Ashley Kumar 3F
Thu Dec 05, 2019 2:53 pm
Forum: Naming
Topic: naming
Replies: 5
Views: 99

Re: naming

I don't think there will be tons of naming, but we don't know what he's gonna throw at us so unfortunately the only way to be really prepared for anything is to memorize the entire worksheet he emailed us
by Ashley Kumar 3F
Thu Dec 05, 2019 2:50 pm
Forum: Lewis Acids & Bases
Topic: I am having trouble
Replies: 4
Views: 88

Re: I am having trouble

If the reactant is e- deficient, then its a lewis acid, and if it has extra, then its a lewis base :)
by Ashley Kumar 3F
Thu Dec 05, 2019 2:47 pm
Forum: Biological Examples
Topic: Biological questions on the final
Replies: 5
Views: 181

Re: Biological questions on the final

I would just study the ones from lecture like myoglobin, hemoglobin, and cisplatin!
by Ashley Kumar 3F
Thu Dec 05, 2019 2:43 pm
Forum: Identifying Acidic & Basic Salts
Topic: Salts as Acids and Bases
Replies: 2
Views: 59

Re: Salts as Acids and Bases

I believe a salt is a strong conjugate base fs the original acid and it is a strong conjugate acid if the original base is weak
by Ashley Kumar 3F
Thu Dec 05, 2019 2:40 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: using Ka and Pka
Replies: 4
Views: 89

Re: using Ka and Pka

pKa and Ka are used to help determine which acid is stronger than the other. They are called the dissociation constant
by Ashley Kumar 3F
Tue Dec 03, 2019 9:42 am
Forum: Naming
Topic: Memorizing
Replies: 9
Views: 135

Re: Memorizing

Sadly yes I think we do
by Ashley Kumar 3F
Tue Dec 03, 2019 9:40 am
Forum: Student Social/Study Group
Topic: Practice Final
Replies: 17
Views: 666

Re: Practice Final

I’m not sure but there are 83 hours of review sessions this week which should help.
by Ashley Kumar 3F
Tue Dec 03, 2019 9:39 am
Forum: Ionic & Covalent Bonds
Topic: bond lengths
Replies: 4
Views: 252

Re: bond lengths

I don’t think we need to know exact bond lengths. Probably just need to know what bond length is and which molecules have shorter or longer bonds
by Ashley Kumar 3F
Tue Dec 03, 2019 9:38 am
Forum: Student Social/Study Group
Topic: Calming the Nerves
Replies: 4
Views: 140

Re: Calming the Nerves

Honestly just breathe deeply in though your nose and out through your mouth for a minute or so it really helps me calm down.
by Ashley Kumar 3F
Tue Dec 03, 2019 9:38 am
Forum: Student Social/Study Group
Topic: Grades
Replies: 14
Views: 476

Re: Grades

He said he doesn’t curve tests, but I think he will curve the class.
by Ashley Kumar 3F
Wed Nov 20, 2019 4:23 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: Boiling Point
Replies: 7
Views: 132

Re: Boiling Point

SO2 would have the higher boiling point because S has more electrons making it have higher attractive forces making the dipole-dipole interactions stronger in SO2 than in O3
by Ashley Kumar 3F
Wed Nov 20, 2019 4:19 pm
Forum: General Science Questions
Topic: Chemitry Series
Replies: 5
Views: 138

Re: Chemitry Series

A ton of people say that 14a is the most difficult for them but others say they hated 14C. It really just depends on the person and what comes easily to them.
by Ashley Kumar 3F
Wed Nov 20, 2019 4:18 pm
Forum: General Science Questions
Topic: Final
Replies: 10
Views: 246

Re: Final

It is cumulative
by Ashley Kumar 3F
Wed Nov 20, 2019 4:18 pm
Forum: General Science Questions
Topic: Test 2
Replies: 7
Views: 211

Re: Test 2

You must memorize them
by Ashley Kumar 3F
Wed Nov 20, 2019 4:17 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-Shaped ??
Replies: 9
Views: 212

Re: T-Shaped ??

AX3E2 is the t-shaped molecule. AX4E is the see saw shape.
by Ashley Kumar 3F
Sun Nov 17, 2019 1:35 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: regions of electron density
Replies: 10
Views: 141

Re: regions of electron density

its areas where electrons are most likely found so yes it does include lone pairs
by Ashley Kumar 3F
Sun Nov 17, 2019 1:34 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 6
Views: 94

Re: VSEPR

VSEPR is what we use to determine the shape of a molecule to limit repulsion
by Ashley Kumar 3F
Sun Nov 17, 2019 1:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Van Der Waals Interaction
Replies: 11
Views: 149

Re: Van Der Waals Interaction

yes all molecules have them
by Ashley Kumar 3F
Sun Nov 17, 2019 1:33 pm
Forum: General Science Questions
Topic: Test 2
Replies: 7
Views: 103

Re: Test 2

we haven't really learned any equations or anything so mostly conceptual based i believe
by Ashley Kumar 3F
Sun Nov 10, 2019 5:51 pm
Forum: Dipole Moments
Topic: dipole moments
Replies: 2
Views: 77

Re: dipole moments

It depends on how long the bond length is
by Ashley Kumar 3F
Sun Nov 10, 2019 5:50 pm
Forum: Electronegativity
Topic: Differences in Electronegativity
Replies: 5
Views: 83

Re: Differences in Electronegativity

I suppose we should remember the electronegativity trends but probably not bonds specifically.
by Ashley Kumar 3F
Sun Nov 10, 2019 5:49 pm
Forum: Bond Lengths & Energies
Topic: test 2
Replies: 16
Views: 218

Re: test 2

Nope it is not cumulative. It only tests us on material past the midterm. The final however is cumulative
by Ashley Kumar 3F
Sun Nov 10, 2019 5:48 pm
Forum: Octet Exceptions
Topic: Reasoning for Octet Exception
Replies: 19
Views: 456

Re: Reasoning for Octet Exception

The d orbital can account for the extra electrons which is why elements from period 3 and beyond can have an expanded octet
by Ashley Kumar 3F
Sun Nov 10, 2019 5:47 pm
Forum: Dipole Moments
Topic: Dipole Moment
Replies: 6
Views: 53

Re: Dipole Moment

A dipole moment is not the same a dipole because it is only temporary
by Ashley Kumar 3F
Sun Nov 03, 2019 2:10 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: electron configuration
Replies: 4
Views: 73

Re: electron configuration

Remove them from the 4s orbital before the 3D orbital unless it is an exception of the rule such as Cr where the electron configuration is odd, but usually you always take it out of 4s first.
by Ashley Kumar 3F
Sun Nov 03, 2019 2:07 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: electron configuration
Replies: 2
Views: 46

Re: electron configuration

When empty, the 3D orbitals energy is higher than 4s but when it fills, the energy lowers hence why you put 3D before 4s
by Ashley Kumar 3F
Sun Nov 03, 2019 2:05 pm
Forum: Bond Lengths & Energies
Topic: Strength of Bonds
Replies: 16
Views: 235

Re: Strength of Bonds

Shorter bonds are stronger. Single bonds are the longest and weakest whereas triple bonds are the shortest and strongest.
by Ashley Kumar 3F
Sun Nov 03, 2019 2:01 pm
Forum: Trends in The Periodic Table
Topic: Exceptions
Replies: 4
Views: 35

Re: Exceptions

When I went to a review session, the TA said that all the elements in the same group as oxygen follow the same exception as oxygen but it is just not as pronounced.
by Ashley Kumar 3F
Sun Nov 03, 2019 1:57 pm
Forum: Lewis Structures
Topic: Central Atom
Replies: 3
Views: 29

Re: Central Atom

Most often it is the atom with the least electro negativity and has the most valence electrons. :)
by Ashley Kumar 3F
Sun Oct 27, 2019 6:50 pm
Forum: General Science Questions
Topic: Extra Credit
Replies: 19
Views: 304

Re: Extra Credit

Not anything that Dr. Lavelle has mentioned so far
by Ashley Kumar 3F
Sun Oct 27, 2019 6:49 pm
Forum: General Science Questions
Topic: Study Guides
Replies: 6
Views: 114

Re: Study Guides

I believe there is a test bank on chemistry community you could check out
by Ashley Kumar 3F
Sun Oct 27, 2019 6:48 pm
Forum: General Science Questions
Topic: Midterms
Replies: 22
Views: 375

Re: Midterms

I believe it is everything we have learned so far. So basically from Fundamentals until now
by Ashley Kumar 3F
Sun Oct 27, 2019 6:47 pm
Forum: Lewis Structures
Topic: Video Modules
Replies: 11
Views: 237

Re: Video Modules

He hasn't mentioned anything on adding more video modules. Probably best to email and ask him
by Ashley Kumar 3F
Sun Oct 27, 2019 6:46 pm
Forum: Resonance Structures
Topic: Bond lenghts.
Replies: 11
Views: 154

Re: Bond lenghts.

Dr. Lavelle did not say anything about needing to know bond lengths so I doubt it
by Ashley Kumar 3F
Fri Oct 18, 2019 8:46 am
Forum: *Shrodinger Equation
Topic: Nodal Planes
Replies: 6
Views: 93

Re: Nodal Planes

3 nodal planes
by Ashley Kumar 3F
Fri Oct 18, 2019 8:46 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: electron configurations
Replies: 3
Views: 66

Re: electron configurations

You would always remove the electron from the higher energy subshell
by Ashley Kumar 3F
Fri Oct 18, 2019 8:44 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Drawing Orbitals
Replies: 5
Views: 73

Re: Drawing Orbitals

He won’t but it’s nice to know what they look like to visualize them
by Ashley Kumar 3F
Fri Oct 18, 2019 8:43 am
Forum: Properties of Light
Topic: Constants and equations
Replies: 4
Views: 53

Re: Constants and equations

They will give us a sheet with the constants on them but I’d say it’s probably a good idea to start remembering them to get ahead.
by Ashley Kumar 3F
Fri Oct 18, 2019 8:41 am
Forum: Photoelectric Effect
Topic: Speed of Light
Replies: 29
Views: 380

Re: Speed of Light

Always the same number!
by Ashley Kumar 3F
Thu Oct 10, 2019 11:50 am
Forum: Limiting Reactant Calculations
Topic: Actual Yield
Replies: 6
Views: 277

Re: Actual Yield

Most of the time they will give the actual yield in the problem. If it is not given, then they probably will not ask for you to calculate the precent yield unless other information is given.
by Ashley Kumar 3F
Thu Oct 10, 2019 11:46 am
Forum: Einstein Equation
Topic: Numbers to memorize [ENDORSED]
Replies: 37
Views: 1970

Re: Numbers to memorize [ENDORSED]

Not for this test, but when we are given the test, most of the basic numbers are on a little "cheat sheet" on the front of the page
by Ashley Kumar 3F
Thu Oct 10, 2019 11:45 am
Forum: Empirical & Molecular Formulas
Topic: Question E9
Replies: 4
Views: 113

Re: Question E9

You should probably learn basic names like sulfate which is SO4 because it comes up pretty often.
by Ashley Kumar 3F
Thu Oct 10, 2019 11:44 am
Forum: Balancing Chemical Reactions
Topic: Fractions
Replies: 34
Views: 566

Re: Fractions

I would say convert it to an integer
by Ashley Kumar 3F
Thu Oct 10, 2019 11:43 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 5441

Re: Test 1 [ENDORSED]

I had this same question and no we do not have to, at least for the test this week.
by Ashley Kumar 3F
Thu Oct 03, 2019 8:12 pm
Forum: Molarity, Solutions, Dilutions
Topic: G. 7
Replies: 2
Views: 74

Re: G. 7

First things first, you must find out how many grams on KNO3 are on 510g. So to do that, you must divide 5.45 by 100 which gets you 0.0545. Then you multiply that by 510g. This tells you how many grams of KNO3 is in the 510g solution which is 27.8g . So then for the second part of the problem, you w...
by Ashley Kumar 3F
Thu Oct 03, 2019 8:06 pm
Forum: Balancing Chemical Reactions
Topic: Compound names
Replies: 11
Views: 218

Re: Compound names

My TA said that we do not need to know the names of the compounds yet, they will be given to us on the test
by Ashley Kumar 3F
Thu Oct 03, 2019 7:32 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Determining Molar Mass
Replies: 19
Views: 210

Re: Determining Molar Mass

Personally, I just do 15.999 but in my discussion my TA just rounded to 16 so I think it should be fine.
by Ashley Kumar 3F
Wed Oct 02, 2019 5:31 pm
Forum: Significant Figures
Topic: Sig Fig Decimal
Replies: 10
Views: 172

Re: Sig Fig Decimal

114 and 114. have the same number of sig figs but adding the "." does seem a little redundant so I'd say stick with 114. But 114.0 is not the same as 114 because it has 4 sig figs.
by Ashley Kumar 3F
Wed Oct 02, 2019 5:29 pm
Forum: Administrative Questions and Class Announcements
Topic: homework
Replies: 5
Views: 118

Re: homework

We turn in our 5 problems that we choose to do this week (week 1) on Friday, but every week after that, we must turn in our homework into our TAs during your office hours :)

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