Search found 106 matches

by Naneeta Desar 1K
Thu Mar 12, 2020 7:48 pm
Forum: General Science Questions
Topic: ENDGAME #12
Replies: 2
Views: 86

Re: ENDGAME #12

So the expression would include the intermediate?
by Naneeta Desar 1K
Thu Mar 12, 2020 7:41 pm
Forum: General Science Questions
Topic: ENDGAME #12
Replies: 2
Views: 86

ENDGAME #12

What is the pre-equilibrium approach?
by Naneeta Desar 1K
Thu Mar 12, 2020 6:11 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Effect of Temperature on Rate Constant
Replies: 2
Views: 9

Re: Effect of Temperature on Rate Constant

As temperature increases, so does the rate constant.
by Naneeta Desar 1K
Thu Mar 12, 2020 6:10 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius equation
Replies: 5
Views: 24

Re: Arrhenius equation

A is the frequency of collisions with the correct orientation.
by Naneeta Desar 1K
Thu Mar 12, 2020 6:09 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: U vs H
Replies: 15
Views: 217

Re: U vs H

Delta U is the change in internal energy whereas delta H is change in enthalpy.
by Naneeta Desar 1K
Thu Mar 12, 2020 6:08 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Topics
Replies: 10
Views: 85

Re: Final Topics

It's cumulative so Outlines 1-6 are a comprehensive guideline on what will be on the final!
by Naneeta Desar 1K
Thu Mar 12, 2020 6:07 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: comparing rates
Replies: 3
Views: 21

Re: comparing rates

Yes they would be the same since the amount of moles formed and consumed are the same.
by Naneeta Desar 1K
Thu Mar 12, 2020 6:05 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: 7A.11) 700K?
Replies: 6
Views: 64

Re: 7A.11) 700K?

You ignore this variable for temperature since it is not included in the equation.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:13 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Developing a Proposed Reaction Mechanism
Replies: 3
Views: 19

Re: Developing a Proposed Reaction Mechanism

I believe the reaction mechanism just needs to correlate with the rate law.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:10 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: intermediate species
Replies: 4
Views: 29

Re: intermediate species

Intermediates are used up in the reaction, meaning they are formed in one step and consumed in another.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:08 am
Forum: General Rate Laws
Topic: Book Problem 7A.17
Replies: 3
Views: 35

Re: Book Problem 7A.17

When the reaction rate does not change for the experiments you look at that means that the reactant is 0 order.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:05 am
Forum: General Rate Laws
Topic: 7A.15
Replies: 6
Views: 59

Re: 7b.15

Generally when a reactant in the rate equation is squared it is 2nd order.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:04 am
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Kinetics v Therodynamics
Replies: 8
Views: 64

Re: Kinetics v Therodynamics

Kinetics regards the actual rate of the reaction and how fast or slow it goes while thermodynamics regards if the reaction will proceed.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:01 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE table
Replies: 5
Views: 37

Re: ICE table

When the equilibrium constant is less than 10^-3 you can assume x is negligible.
by Naneeta Desar 1K
Tue Mar 10, 2020 1:00 am
Forum: Experimental Details
Topic: Which Experiment to Use
Replies: 3
Views: 276

Re: Which Experiment to Use

You need to choose the reaction where the values of the other equations are constant and the actual reactant you are looking at changes.
by Naneeta Desar 1K
Tue Mar 10, 2020 12:57 am
Forum: General Rate Laws
Topic: Overall rate law
Replies: 8
Views: 49

Re: Overall rate law

The whole reaction depends on the slow step.
by Naneeta Desar 1K
Mon Mar 09, 2020 3:02 pm
Forum: General Rate Laws
Topic: molecularity
Replies: 8
Views: 38

Re: molecularity

Yes termolecular would be considered a 3rd order reaction I believe. However these are very uncommon.
by Naneeta Desar 1K
Mon Mar 09, 2020 3:01 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 21
Views: 278

Re: Final

Final exam is cumulative: Outlines 1-6. I believe it still will be taken in person.
by Naneeta Desar 1K
Sun Mar 08, 2020 3:09 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: When to add Platinum
Replies: 8
Views: 56

Re: When to add Platinum

Add platinum or another inert electrode when there is not a phase change or the oxidized and reduced things are in the same soluttion in the cathode or anode.
by Naneeta Desar 1K
Sun Mar 08, 2020 3:06 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: concentration cells
Replies: 5
Views: 44

Re: concentration cells

In concentration cells the E°cell is always 0.
by Naneeta Desar 1K
Sun Mar 08, 2020 3:05 pm
Forum: General Science Questions
Topic: Review Packet
Replies: 14
Views: 216

Re: Review Packet

The review sessions for the final are up on the 14B website!
by Naneeta Desar 1K
Sun Mar 01, 2020 2:38 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: salt bridge
Replies: 11
Views: 47

Re: salt bridge

It disrupts the charges from building up and it keeps neutrality.
by Naneeta Desar 1K
Sat Feb 29, 2020 9:16 pm
Forum: Balancing Redox Reactions
Topic: When to add H+ or H20
Replies: 19
Views: 170

Re: When to add H+ or H20

h2o is used to balance the amounts of oxygen whereas h+ is used to balance the hydrogens.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:40 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1218271

Re: Post All Chemistry Jokes Here

How often do I tell chemistry jokes?

Periodically.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:38 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Concentration Cells
Replies: 5
Views: 28

Re: Concentration Cells

A salt bridge can be used to transfer ions.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:36 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Galvanic/voltaic cell
Replies: 6
Views: 42

Re: Galvanic/voltaic cell

Galvanic cells gets its energy from the redox reactions that are spontaneous and the electrolytic cells contain non-spont. reactions and needs an electron source which is external.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:32 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Salt Bridge
Replies: 6
Views: 51

Re: Salt Bridge

In the salt bridge, the anions flow to the anode and the cations flow toward the cathode.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:31 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagrams
Replies: 9
Views: 57

Re: Cell Diagrams

A line is a porous disk, double line is a salt bridge
by Naneeta Desar 1K
Mon Feb 24, 2020 8:28 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Eo as an intensive property
Replies: 9
Views: 92

Re: Eo as an intensive property

It does not change even with a variable change in matter.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:25 pm
Forum: Balancing Redox Reactions
Topic: Half reactions
Replies: 17
Views: 146

Re: Half reactions

When it is balanced the number of electrons on the products and reactants of each reaction are balanced.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:22 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: test 2 material clarification
Replies: 10
Views: 110

Re: test 2 material clarification

yes! it will be I believe.
by Naneeta Desar 1K
Mon Feb 24, 2020 8:21 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Concentration and Cell Potential
Replies: 5
Views: 53

Re: Concentration and Cell Potential

Cell potential changes with the change in concentration: as the reactants increase and products decrease CP increases and as reactants decrease and products increase CP decreases.
by Naneeta Desar 1K
Mon Feb 10, 2020 12:49 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Stability and Bond Enthalpy
Replies: 3
Views: 32

Re: Stability and Bond Enthalpy

I believe that when the bond enthalpy is higher, the bond is stronger.
by Naneeta Desar 1K
Sat Feb 08, 2020 4:38 pm
Forum: Phase Changes & Related Calculations
Topic: Steam burns more than water
Replies: 5
Views: 68

Re: Steam burns more than water

Since steam has a higher energy than water, it burns more.
by Naneeta Desar 1K
Sun Feb 02, 2020 8:42 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Quadratic Equation
Replies: 5
Views: 90

Re: Quadratic Equation

https://www.khanacademy.org/math/algebr ... ula-review

This article is helpful in reviewing the quadratic formula! Check it out :)


by Naneeta Desar 1K
Sun Feb 02, 2020 2:50 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Phase change
Replies: 20
Views: 131

Re: Phase change

Delta H is positive since melting is breaking bonds and energy is required in order to do so.
by Naneeta Desar 1K
Sun Feb 02, 2020 2:40 pm
Forum: Calculating Work of Expansion
Topic: Homework Textbook
Replies: 1
Views: 17

Re: Homework Textbook

Here you go!
by Naneeta Desar 1K
Sun Feb 02, 2020 2:32 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Elements
Replies: 8
Views: 39

Re: Elements

It is because since molecules such as O2 and N2 are readily discovered in this state the enthalpy of formation is 0 kJ/mol.
by Naneeta Desar 1K
Sun Feb 02, 2020 2:27 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: pressure v. volume
Replies: 3
Views: 20

Re: pressure v. volume

With constant pressure and no change in volume delta U= delta H. Also when there is no change in pressure and constant volume delta U= delta H.
by Naneeta Desar 1K
Sun Feb 02, 2020 2:24 pm
Forum: Ideal Gases
Topic: pv=nrt
Replies: 9
Views: 75

Re: pv=nrt

Yes, p,v,n, and t are all variable while r is constant. It just depends on what information the question provides for you.
by Naneeta Desar 1K
Sun Feb 02, 2020 2:22 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: residual entropy
Replies: 4
Views: 32

Re: residual entropy

It is the difference between the entropy not at equilibrium and crystal state of a substance close to absolute zero.
by Naneeta Desar 1K
Sun Jan 26, 2020 12:24 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: State Property & State Function
Replies: 1
Views: 22

Re: State Property & State Function

A state property is an entity that does not depend on how the substance was prepared. State function is another way to indicate a state property
by Naneeta Desar 1K
Sun Jan 26, 2020 12:21 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Negative Square Root solving an ICE box
Replies: 13
Views: 64

Re: Negative Square Root solving an ICE box

Having a negative square root would not make sense in the context of the problem therefore you should check your previous work to see if you have made a mistake.
by Naneeta Desar 1K
Mon Jan 20, 2020 11:36 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kw temperature
Replies: 8
Views: 51

Re: Kw temperature

Room temperature, approximately 25°C
by Naneeta Desar 1K
Mon Jan 20, 2020 12:46 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Le Chatelier's principle
Replies: 7
Views: 49

Re: Le Chatelier's principle

This principle basically explains that the reaction will favor one side (either the products or the reactants) and how the reaction will continue when an additional condition is placed on the reaction at equilibrium.
by Naneeta Desar 1K
Mon Jan 20, 2020 12:40 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Pressure changes
Replies: 7
Views: 46

Re: Pressure changes

If the pressure is increased then the reaction will favor the side where there are less moles of either the products or the reactants.
by Naneeta Desar 1K
Mon Jan 20, 2020 12:38 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ice table
Replies: 5
Views: 37

Re: ice table

The ICE table can include solids and liquids however the values will be 0 since they are not included in the equilibrium constant equation so they're impact is negligible.
by Naneeta Desar 1K
Mon Jan 20, 2020 12:36 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Adding a catalyst
Replies: 7
Views: 51

Re: Adding a catalyst

In addition, adding a catalyst does not affect the amount of free energy (G) in the reaction.
by Naneeta Desar 1K
Mon Jan 20, 2020 12:35 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: q vs k
Replies: 9
Views: 45

Re: q vs k

Yes Q is the value calculated when the reaction is not at equilibrium.
by Naneeta Desar 1K
Mon Jan 20, 2020 12:34 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ATP hydrolysis [ENDORSED]
Replies: 3
Views: 40

Re: ATP hydrolysis [ENDORSED]

I'm not sure what exact details we have to know but in general, ATP hydrolysis is exergonic because there is less free energy in the products than the reactants.
by Naneeta Desar 1K
Mon Jan 13, 2020 10:46 pm
Forum: Ideal Gases
Topic: When to use this equation
Replies: 14
Views: 107

Re: When to use this equation

This equation is the ideal gas equation and should be used when you want to convert the concentration to pressure or vice versa.
by Naneeta Desar 1K
Mon Jan 13, 2020 10:41 pm
Forum: Administrative Questions and Class Announcements
Topic: Are Lectures Bruincasted?
Replies: 10
Views: 136

Re: Are Lectures Bruincasted?

The modules have very similar information to his lectures so review the modules if you are unclear with a certain topic!
by Naneeta Desar 1K
Mon Jan 13, 2020 10:40 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Studying tips
Replies: 10
Views: 59

Re: Studying tips

Review your notes at the end of every week to stay on top of the content!
by Naneeta Desar 1K
Sun Dec 08, 2019 11:55 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1218271

Re: Post All Chemistry Jokes Here

What do you call a funny heme complex?

A meme complex :D
by Naneeta Desar 1K
Fri Dec 06, 2019 5:56 pm
Forum: Naming
Topic: Abbreviations
Replies: 2
Views: 38

Re: Abbreviations

Screen Shot 2019-12-06 at 5.56.44 PM.png


Here's a screenshot from the book.
by Naneeta Desar 1K
Thu Dec 05, 2019 11:42 pm
Forum: Significant Figures
Topic: Sig Figs on Tests
Replies: 24
Views: 760

Re: Sig Figs on Tests

The problem usually contains an initial number and is usually the standard for how many sig figs need to be in the answer. As a rule of thumb the answer should have the lowest number of sig figs as given in the problem.
by Naneeta Desar 1K
Thu Dec 05, 2019 11:39 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: pKa
Replies: 1
Views: 24

Re: pKa

pKa= -log(Ka)
It is used to address the strength of acids. If the pKa is low then the acid is strong, if the pKa is high it refers to a weak acid.
by Naneeta Desar 1K
Thu Dec 05, 2019 11:37 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: 6C.17
Replies: 2
Views: 35

Re: 6C.17

Strong bases also dissociate completely similar to strong acids. By identifying which molecule has a greater dissociation ability you can identify which molecule is stronger.
by Naneeta Desar 1K
Thu Dec 05, 2019 11:35 pm
Forum: DeBroglie Equation
Topic: Quantum Help
Replies: 4
Views: 147

Re: Quantum Help

First identify what the problem addresses in terms of topics because each topic we learned in quantum has particular equations. For example if the question is regarding the photoelectric effect the equations used are very centralized to that topic.
by Naneeta Desar 1K
Mon Dec 02, 2019 12:06 am
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: Strength
Replies: 4
Views: 109

Re: Strength

A strong base is one that is completely dissociated in an aqueous solution.
by Naneeta Desar 1K
Sun Dec 01, 2019 10:00 am
Forum: Biological Examples
Topic: Vitamin B12
Replies: 3
Views: 35

Re: Vitamin B12

Anemia results from a low vitamin B12 count.
by Naneeta Desar 1K
Sun Dec 01, 2019 9:47 am
Forum: Student Social/Study Group
Topic: Wednesday 11/27 Lecture
Replies: 5
Views: 105

Re: Wednesday 11/27 Lecture

Yes I can send mine to you!
by Naneeta Desar 1K
Sat Nov 30, 2019 10:47 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted or Lewis Definition?
Replies: 6
Views: 55

Re: Bronsted or Lewis Definition?

I believe for the final we will have to know both the bronsted and lewis definitions since we went over both in lecture.
by Naneeta Desar 1K
Sat Nov 30, 2019 10:45 pm
Forum: Naming
Topic: Naming
Replies: 4
Views: 40

Re: Naming

I believe ferrate is the Latin name for iron and we use this name for coordination compounds.
by Naneeta Desar 1K
Fri Nov 29, 2019 1:50 pm
Forum: Lewis Acids & Bases
Topic: acidic oxide/basic oxide
Replies: 2
Views: 44

Re: acidic oxide/basic oxide

Acidic oxides usually are oxides of nonmetals whereas basic oxides are normally oxides of metals. So, acidic oxides dissolve in water to form acids while basic oxides dissolve in water to form a metal oxide which is basic. In addition, acidic oxides are covalent compounds whereas basic oxides are io...
by Naneeta Desar 1K
Fri Nov 29, 2019 1:45 pm
Forum: Bronsted Acids & Bases
Topic: 6D11
Replies: 1
Views: 45

Re: 6D11

By breaking down KBr, K+ and Br- is formed. K+ is weak and is attracted to the negatively charged H20 however the attraction is not completely strong enough to adjust the structure of the water molecule. Br- is attracted to the positively charged side of H2O but also isn't strong enough to adjust th...
by Naneeta Desar 1K
Mon Nov 25, 2019 6:54 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2
Replies: 1
Views: 43

Test 2

When will be getting back our second test?
by Naneeta Desar 1K
Mon Nov 25, 2019 6:46 pm
Forum: Naming
Topic: roman numerals
Replies: 7
Views: 69

Re: roman numerals

Many of the transition metals have multiple charged ions therefore the roman numerals clarifies and distinguishes them.
by Naneeta Desar 1K
Mon Nov 25, 2019 6:40 pm
Forum: Hybridization
Topic: Tetravalence of Carbon
Replies: 3
Views: 25

Re: Tetravalence of Carbon

Carbon is tetravalent because it can form 4 bonds with atoms.
by Naneeta Desar 1K
Sun Nov 17, 2019 8:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Terminal Atom
Replies: 2
Views: 30

Re: Terminal Atom

They are the atoms present at both ends of a molecule.
by Naneeta Desar 1K
Sun Nov 17, 2019 8:18 pm
Forum: Bond Lengths & Energies
Topic: 3F5 a
Replies: 2
Views: 37

Re: 3F5 a

Since ionic bonds form strong electrostatic interactions with ions they have higher melting points than covalent compounds.
by Naneeta Desar 1K
Sun Nov 17, 2019 8:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shapes
Replies: 6
Views: 49

Re: Molecular Shapes

Yes, I believe we do since it was covered in lecture.
by Naneeta Desar 1K
Sun Nov 17, 2019 8:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 4
Views: 44

Re: Bond Angles

Yes I don't think we need to know the exact angles but remember if there is a lone pair then the angle might be less than the ones indicated.
by Naneeta Desar 1K
Sat Nov 16, 2019 5:16 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Hydrogen Bonding
Replies: 6
Views: 40

Re: Hydrogen Bonding

It's considered a type of dipole-dipole interaction but it is stronger than the normal dipole-dipole interaction.
by Naneeta Desar 1K
Sat Nov 16, 2019 5:14 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR and Polarity
Replies: 4
Views: 40

Re: VSEPR and Polarity

You can look at the symmetry of the atoms in order to determine polarity.
by Naneeta Desar 1K
Sat Nov 16, 2019 5:03 pm
Forum: Dipole Moments
Topic: Interaction Potential Energy
Replies: 2
Views: 47

Re: Interaction Potential Energy

by Naneeta Desar 1K
Sat Nov 16, 2019 4:57 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: Ion Dipole v. Ion Induced Dipole
Replies: 1
Views: 29

Re: Ion Dipole v. Ion Induced Dipole

Ion dipole occurs between an ion that is fully charged and a dipole that is partially charged, whereas ion induced dipole occurs with a fully charged ion and a dipole that is temporarily charged.
by Naneeta Desar 1K
Sat Nov 16, 2019 4:52 pm
Forum: Dipole Moments
Topic: Shape of Molecule/Strength of Interactions
Replies: 4
Views: 49

Re: Shape of Molecule/Strength of Interactions

Rod shaped molecules have more surface area when they are condensed with one another therefore increasing the area of intermolecular forces having a higher boiling point, spherical molecules have lower boiling points since they don't have an increase in forces.
by Naneeta Desar 1K
Mon Nov 04, 2019 9:22 am
Forum: Lewis Structures
Topic: Oxygen
Replies: 2
Views: 35

Re: Oxygen

This is because in the case of H2O due to the electron electron repulsion the electrons expand forcing the bonds to be pushed down causing H2O to have a bent shape.
by Naneeta Desar 1K
Mon Nov 04, 2019 9:17 am
Forum: Electronegativity
Topic: Difference
Replies: 5
Views: 52

Re: Difference

Electronegativity is the ability for an atom to electrons to bond to the element and polarizability is the extent to which an atom is distorted and how dipoles form.
by Naneeta Desar 1K
Sun Nov 03, 2019 10:07 am
Forum: Electronegativity
Topic: electronegativity trend
Replies: 9
Views: 77

Re: electronegativity trend

Electronegativity decreases down a group due to the increase in shells making the electrons further from the nucleus therefore decreasing the attraction between the protons and electrons.
by Naneeta Desar 1K
Sun Nov 03, 2019 10:03 am
Forum: Dipole Moments
Topic: Significance
Replies: 2
Views: 26

Re: Significance

They help to predict the molecule's polarity.
by Naneeta Desar 1K
Sun Nov 03, 2019 10:00 am
Forum: Bond Lengths & Energies
Topic: Ions for the Midterm
Replies: 3
Views: 51

Re: Ions for the Midterm

I believe that for those they might give us the formula since those aren't the ions that we see everyday however I am not completely sure.
by Naneeta Desar 1K
Sun Oct 27, 2019 10:23 pm
Forum: Ionic & Covalent Bonds
Topic: Valence Electrons
Replies: 3
Views: 36

Re: Valence Electrons

You can figure out the amount by looking at the group the element is categorized under. The group number is usually the amount of valence electrons the element has.
by Naneeta Desar 1K
Sun Oct 27, 2019 9:36 pm
Forum: Lewis Structures
Topic: Hybridization
Replies: 2
Views: 28

Re: Hybridization

The hybridization is associated withthe atom's steric number. Which is "steric number=# of atoms bonded to the atom + # of lone pairs the atom has"
by Naneeta Desar 1K
Sun Oct 27, 2019 9:33 pm
Forum: Lewis Structures
Topic: VSEPR: E in AXE
Replies: 2
Views: 20

Re: VSEPR: E in AXE

It represents the free electron pairs.
by Naneeta Desar 1K
Sun Oct 27, 2019 9:30 pm
Forum: Student Social/Study Group
Topic: Midterm Length
Replies: 7
Views: 136

Re: Midterm Length

Where will be taking the midterm? The same lecture hall as class?
by Naneeta Desar 1K
Sun Oct 27, 2019 9:27 pm
Forum: Trends in The Periodic Table
Topic: Electronegativity vs. effective nuclear charge
Replies: 5
Views: 41

Re: Electronegativity vs. effective nuclear charge

Electronegativity is the process of atoms to attract electrons in order to build bonds. Effective nuclear charge is the nucleus's pull and strength to hold in the electrons.
by Naneeta Desar 1K
Sun Oct 20, 2019 5:13 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Advice for studying
Replies: 58
Views: 1317

Re: Advice for studying

I do best when I study in a group. I understand information better when other people explain and give their input into various topics!
by Naneeta Desar 1K
Sun Oct 20, 2019 5:08 pm
Forum: General Science Questions
Topic: Midterm
Replies: 12
Views: 227

Re: Midterm

Will there be a review session for the midterm?
by Naneeta Desar 1K
Sun Oct 20, 2019 5:03 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg's Constant
Replies: 3
Views: 46

Re: Rydberg's Constant

Yes, just stick to the ones he provides us.
by Naneeta Desar 1K
Sun Oct 20, 2019 5:00 pm
Forum: Quantum Numbers and The H-Atom
Topic: Matter and wavelike properties
Replies: 3
Views: 43

Re: Matter and wavelike properties

For large objects the wavelength would be far to small to be observable.
by Naneeta Desar 1K
Sun Oct 20, 2019 1:18 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Wave Function vs Orbital vs Subshell vs Shell
Replies: 3
Views: 35

Re: Wave Function vs Orbital vs Subshell vs Shell

A quick explanation is that the atomic orbital is math function in which explains the wave behavior of either 1 electron or an electron pair in an atom and are composed of electrons in the same energy levels but have different spins. The wave functions are exact physical solutions of Schrodinger equ...
by Naneeta Desar 1K
Mon Oct 14, 2019 8:56 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: En equation
Replies: 1
Views: 21

Re: En equation

Yes, I believe so, however keep in mind that when applying this number to the context of various problems the value of the photon emitted will not be negative.
by Naneeta Desar 1K
Mon Oct 14, 2019 8:47 am
Forum: Student Social/Study Group
Topic: Places to study
Replies: 3
Views: 75

Re: Places to study

There are a ton of coffee shops in Westwood that you can study at! Profetta is one of my favorites.
by Naneeta Desar 1K
Mon Oct 14, 2019 8:46 am
Forum: Properties of Light
Topic: Constants
Replies: 2
Views: 26

Re: Constants

Planck's constant connects the frequency of the electromagnetic radiation to the energy in a quantum or also known as a photon. Rydberg's constant connects the electromagnetic spectra of an atom and is a physical constant.
by Naneeta Desar 1K
Sun Oct 13, 2019 9:57 pm
Forum: Photoelectric Effect
Topic: electrons
Replies: 2
Views: 54

Re: electrons

hello! I was confused on this too and I found this website that explains it very well! Hope this helps :) https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Quantum_Mechanics/09._The_Hydrogen_Atom/Atomic_...

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