Search found 59 matches

by Hilda Sauceda 3C
Sun Feb 10, 2019 10:42 am
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Negative q
Replies: 7
Views: 26

Re: Negative q

it means its exothermic and heat is being released from the reaction
by Hilda Sauceda 3C
Sun Feb 10, 2019 10:41 am
Forum: Calculating Work of Expansion
Topic: Gas Constant
Replies: 3
Views: 27

Re: Gas Constant

from the examples i have seen done they usually use that one so i dont think they will switch it up on us.
by Hilda Sauceda 3C
Sun Feb 10, 2019 10:38 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Midterm [ENDORSED]
Replies: 47
Views: 409

Re: Midterm [ENDORSED]

Do you guys know if the TAs or UAs are going to have some type of midterm review.
by Hilda Sauceda 3C
Sun Feb 10, 2019 10:36 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Equations
Replies: 4
Views: 26

Re: Equations

Yeah thats the same problem i have, Im not sure where to use what because some are so closely related.
by Hilda Sauceda 3C
Sun Feb 03, 2019 1:25 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: S and pressure
Replies: 3
Views: 280

Re: S and pressure

it should increase, +.
by Hilda Sauceda 3C
Sun Feb 03, 2019 1:23 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Adiabatic
Replies: 4
Views: 18

Re: Adiabatic

also heat is not allowed to enter or leave the system
by Hilda Sauceda 3C
Sun Feb 03, 2019 1:19 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: kJ vs J
Replies: 9
Views: 25

Re: kJ vs J

1 kj = 1000j but you can use which ever
by Hilda Sauceda 3C
Sun Feb 03, 2019 1:16 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Specific Heat (Csp)
Replies: 3
Views: 13

Re: Specific Heat (Csp)

It will most likely be given but its safe to know how to approach the question when its not.
by Hilda Sauceda 3C
Tue Jan 29, 2019 12:38 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Cv versus Cp
Replies: 4
Views: 26

Re: Cv versus Cp

yeah its always true not just for the example
by Hilda Sauceda 3C
Tue Jan 29, 2019 12:37 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: 4A.1
Replies: 2
Views: 13

Re: 4A.1

the manual says its a closed system. i dont know why they put it like that in the book though.
by Hilda Sauceda 3C
Tue Jan 29, 2019 12:35 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Enthalpy equations
Replies: 2
Views: 11

Re: Enthalpy equations

No i dont think so because he didnt mention it
by Hilda Sauceda 3C
Tue Jan 29, 2019 12:34 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimetry
Replies: 5
Views: 17

Re: Calorimetry

yeah the bomb calorimeters keeps a constant volume while the other keeps constant pressure. he might do examples on it
by Hilda Sauceda 3C
Tue Jan 22, 2019 8:55 am
Forum: Ideal Gases
Topic: ICE table
Replies: 4
Views: 19

Re: ICE table

Our TA said something about learning to write it in bar but i dont think its required to do so. maybe that is just easier for some people
by Hilda Sauceda 3C
Tue Jan 22, 2019 8:54 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ignoring x
Replies: 10
Views: 45

Re: ignoring x

we ignore it when its = to or less than 10^3 because its a really small number that wont make a big difference to the answer
by Hilda Sauceda 3C
Tue Jan 22, 2019 8:52 am
Forum: Administrative Questions and Class Announcements
Topic: Discussion Section Test
Replies: 4
Views: 42

Re: Discussion Section Test

Usually these isnt really any MC unless its a concept that he wanted us to remember from lecture, but the ones worth more and that take up like 90% of the test is the short answers.
by Hilda Sauceda 3C
Tue Jan 22, 2019 8:49 am
Forum: Administrative Questions and Class Announcements
Topic: Number of questions on test one [ENDORSED]
Replies: 39
Views: 16641

Re: Number of questions on test one [ENDORSED]

if its similar to 14A then its usually 8 questions (some with sub parts) for 40 min
by Hilda Sauceda 3C
Tue Jan 22, 2019 8:47 am
Forum: Phase Changes & Related Calculations
Topic: Endothermic or Exothermic
Replies: 20
Views: 352

Re: Endothermic or Exothermic

Exothermic because heat is being released
by Hilda Sauceda 3C
Sun Jan 13, 2019 4:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: equations
Replies: 10
Views: 40

Re: equations

usually reactants are on the left and products on the write and when its not given to us straight forward we first have to figure out what the chemical equation is.
by Hilda Sauceda 3C
Sun Jan 13, 2019 4:56 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equations
Replies: 6
Views: 33

Re: Equations

Kc- concentration and Kp- partial pressure
by Hilda Sauceda 3C
Sun Jan 13, 2019 4:54 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Criteria
Replies: 4
Views: 10

Re: Equilibrium Criteria

Q and K have to equal each other, then its at equilibrium.
by Hilda Sauceda 3C
Sat Dec 08, 2018 9:12 pm
Forum: Student Social/Study Group
Topic: Studying for tests/midterm
Replies: 18
Views: 757

Re: Studying for tests/midterm

which videos do you find most helpful?
by Hilda Sauceda 3C
Sat Dec 08, 2018 9:10 pm
Forum: Student Social/Study Group
Topic: Structure of the final
Replies: 4
Views: 39

Re: Structure of the final

Should be of similar structure to the midterm, just with everything included
by Hilda Sauceda 3C
Sat Dec 08, 2018 9:09 pm
Forum: Student Social/Study Group
Topic: Practice Final
Replies: 2
Views: 51

Re: Practice Final

i think that was the only one made
by Hilda Sauceda 3C
Sun Dec 02, 2018 2:34 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 38
Views: 19477

Re: Tutoring? [ENDORSED]

In sessions who does the questions step by step even if they seem obvious?
by Hilda Sauceda 3C
Sun Dec 02, 2018 2:33 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strength of an acid
Replies: 14
Views: 389

Re: Strength of an acid

Across a row in periodic table, acidity increases with the increase in electronegativity.
by Hilda Sauceda 3C
Sun Dec 02, 2018 2:31 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Acid vs base [ENDORSED]
Replies: 15
Views: 130

Re: Acid vs base [ENDORSED]

Lewis acid accepts electrons and Lewis base donates electrons.
by Hilda Sauceda 3C
Sun Dec 02, 2018 2:27 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 30
Views: 14284

Re: Chemistry News

does anyone know is there is gonna be a study guide?
by Hilda Sauceda 3C
Sat Nov 24, 2018 12:25 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: on test? [ENDORSED]
Replies: 3
Views: 95

Re: on test? [ENDORSED]

the syllabus says what is going to be on each test exactly.
by Hilda Sauceda 3C
Sat Nov 24, 2018 12:24 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: vsepr model
Replies: 3
Views: 26

Re: vsepr model

Im not sure if this was explained in lecture.
by Hilda Sauceda 3C
Sat Nov 24, 2018 12:21 pm
Forum: Hybridization
Topic: Writing out Hybridization
Replies: 8
Views: 38

Re: Writing out Hybridization

in lecture Dr. Lavelle said it didn't matter where you placed D either in the beginning or end because he does it different from how the book does it.
by Hilda Sauceda 3C
Sat Nov 24, 2018 12:19 pm
Forum: Hybridization
Topic: stating the hybridization of an atom
Replies: 3
Views: 36

Re: stating the hybridization of an atom

i would say it has to be 2 but maybe your TA can be more flexible with it so just ask to be safe
by Hilda Sauceda 3C
Sat Nov 17, 2018 11:54 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 3
Replies: 19
Views: 184

Re: Test 3

He said its easier if we memorize them so i suggest to learn.
by Hilda Sauceda 3C
Sat Nov 17, 2018 11:50 am
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 28
Views: 15208

Re: How to find my posts

Does anyone what is going to be on exam three?
by Hilda Sauceda 3C
Sat Nov 17, 2018 11:41 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Seesaw Shape
Replies: 4
Views: 53

Re: Seesaw Shape

Yeah but they will be just slightly less than those angles, but for approximation thats right.
by Hilda Sauceda 3C
Sun Nov 11, 2018 12:08 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: Dipole Moment
Replies: 3
Views: 40

Re: Dipole Moment

The bond dipole moment uses the idea of electric dipole moment to measure the polarity of a chemical bond within a molecule. It occurs whenever there is a separation of positive and negative charges, or when more electrons are being pulled to one side more than the other.
by Hilda Sauceda 3C
Sun Nov 11, 2018 12:06 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: Greater polarizability of larger molecules
Replies: 6
Views: 46

Re: Greater polarizability of larger molecules

The greater the number of electrons, the less control the nuclear charge has on charge distribution, and thus the increased polarizability of the atom.
by Hilda Sauceda 3C
Sun Nov 11, 2018 11:52 am
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: 12
Views: 164

Re: Boiling point

The rod and spherical shaped molecules have different boiling points which is why they have different shapes. With spherical shaped molecules having a lower boiling point.
by Hilda Sauceda 3C
Sun Nov 04, 2018 9:06 pm
Forum: Administrative Questions and Class Announcements
Topic: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
Replies: 121
Views: 4196

Re: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]

Thank you for this review it has really been helping me understand things better!
by Hilda Sauceda 3C
Sun Nov 04, 2018 8:15 pm
Forum: Administrative Questions and Class Announcements
Topic: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
Replies: 121
Views: 4196

Re: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]

does anyone know how to solve 8b? i am having trouble with it.
by Hilda Sauceda 3C
Sun Nov 04, 2018 6:32 pm
Forum: Administrative Questions and Class Announcements
Topic: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
Replies: 121
Views: 4196

Re: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]

Can anyone explain the reasoning for why 6d is true.
by Hilda Sauceda 3C
Sat Oct 27, 2018 5:59 pm
Forum: Ionic & Covalent Bonds
Topic: Chemical Bonding
Replies: 8
Views: 82

Re: Chemical Bonding

Yeah as of now we have just learned the basics of it but we should be going into more detail this coming week, but i do not know exactly how in depth we will go.
by Hilda Sauceda 3C
Sat Oct 27, 2018 5:55 pm
Forum: Ionic & Covalent Bonds
Topic: Bond
Replies: 9
Views: 118

Re: Bond

I am pretty sure that we do not have to worry about that for this class because of their complexity, but it would be fun to know.
by Hilda Sauceda 3C
Sat Oct 27, 2018 5:51 pm
Forum: Ionic & Covalent Bonds
Topic: Valence Electrons
Replies: 4
Views: 56

Re: Valence Electrons

Group 2 has 2 valence electrons and group 13 has 3 valence electrons........ etc...
by Hilda Sauceda 3C
Sun Oct 21, 2018 8:29 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Test Question
Replies: 8
Views: 73

Re: Test Question

We dont need to draw them but know what each represents.
by Hilda Sauceda 3C
Sun Oct 21, 2018 8:23 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Schrodinger's Wave Function
Replies: 10
Views: 98

Re: Schrodinger's Wave Function

Just know the concepts behind the equation, but no calculation will be on the test. we are not expected to know how to do that.
by Hilda Sauceda 3C
Sun Oct 21, 2018 8:20 pm
Forum: Properties of Light
Topic: Test #2
Replies: 2
Views: 56

Re: Test #2

Exams will always be in discussion, but midterm and final arent.
by Hilda Sauceda 3C
Sun Oct 14, 2018 7:11 pm
Forum: Einstein Equation
Topic: Einstein's Equation: E=hv
Replies: 11
Views: 164

Re: Einstein's Equation: E=hv

H is a constant and it is given to us.
by Hilda Sauceda 3C
Sun Oct 14, 2018 7:10 pm
Forum: Properties of Light
Topic: C=Wavelength*Frequency
Replies: 11
Views: 105

Re: C=Wavelength*Frequency

C is a constants that represents the speed if light which will be given.
by Hilda Sauceda 3C
Sun Oct 14, 2018 7:08 pm
Forum: Einstein Equation
Topic: Numbers to memorize
Replies: 22
Views: 259

Re: Numbers to memorize

Constants and equations will always be provided at the beginning of the test.
by Hilda Sauceda 3C
Sun Oct 14, 2018 7:05 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20005

Re: formula units [ENDORSED]

The numbers on the numerator are constants which will always be given and they are found on the "constants and Equations" worksheet.
by Hilda Sauceda 3C
Sun Oct 07, 2018 7:31 pm
Forum: Limiting Reactant Calculations
Topic: Theoretical Yield
Replies: 7
Views: 88

Re: Theoretical Yield

Its larger because its the maximum amount possible.
by Hilda Sauceda 3C
Sun Oct 07, 2018 7:25 pm
Forum: Properties of Light
Topic: Chapter 1 Homework
Replies: 6
Views: 111

Re: Chapter 1 Homework

Porus_Karwa_3B wrote:Is Chapter 1 homework due in our next discussion period or is it due on the one after that?

I think they said to do problems that were relevant to what we were learning.
by Hilda Sauceda 3C
Sun Oct 07, 2018 7:22 pm
Forum: Balancing Chemical Reactions
Topic: Balancing Procedure
Replies: 7
Views: 133

Re: Balancing Procedure

Celeste 1C wrote:Question h.1 asks why you can't just add an extra O molecule to balance the equation? Why wouldn't we be able to do that?

I remember that in lecture Dr. Lavelle said that atoms were not created nor destroyed.

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