Search found 79 matches

by Nathan Rothschild_2D
Fri Jan 17, 2020 4:03 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE tables
Replies: 5
Views: 22

Re: ICE tables

You use ice tables when the reactants don't dissociate completely. When there is not a strong acid or base involved, use ice tables.
by Nathan Rothschild_2D
Fri Jan 17, 2020 3:57 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Endothermic and exothermic reactions
Replies: 11
Views: 34

Re: Endothermic and exothermic reactions

Yes, some chemical equations will include delta H, or heat in the reaction to show if heat is absorbed or released in the reaction.
by Nathan Rothschild_2D
Fri Jan 17, 2020 3:54 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Kw
Replies: 16
Views: 53

Re: Kw

Kw is the equilibrium constant for water and at 25 C is 10^(-14), but if the equation doesn't specify the temperature, can we assume that the reaction is taking place at 25 C?
by Nathan Rothschild_2D
Fri Jan 17, 2020 3:52 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: ICE table
Replies: 11
Views: 33

Re: ICE table

I believe there are 6 strong acids and 6 strong bases. Memorize those and any other acid or base won't dissociate completely
by Nathan Rothschild_2D
Fri Jan 17, 2020 3:44 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Inert Gas does not change pressure?
Replies: 7
Views: 29

Re: Inert Gas does not change pressure?

In order to change the equilibrium constant you must change the partial pressure of either the products or reactants, such as adding more of the reactants. Adding an inert gas would not change the partial pressure of the reactants or products.
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:42 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Pure Substances
Replies: 3
Views: 26

Re: Pure Substances

Are solids and liquids the only things we have to remember to exclude from equilibrium reaction calculations?
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:35 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Ice tables for partial pressures
Replies: 4
Views: 20

Re: Ice tables for partial pressures

Yes ice pressures are for all equilibrium reactions
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:29 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homogenous Equilibrium
Replies: 13
Views: 29

Re: Homogenous Equilibrium

He never went over how homogeneous and heterogeneous reactions affect the speed of a reaction
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:26 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q
Replies: 10
Views: 25

Re: Q

If we are at the reaction equilibrium but we aren't sure would we use Q?
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:19 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: What is this?
Replies: 23
Views: 128

Re: What is this?

Those are all of the factors that can be applied
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:17 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Partial Pressure
Replies: 19
Views: 48

Re: Partial Pressure

Will the partial pressure of the gases always add to the same thing on both sides of the reaction?
by Nathan Rothschild_2D
Sun Jan 12, 2020 10:16 pm
Forum: Ideal Gases
Topic: Kc and Kp
Replies: 8
Views: 19

Re: Kc and Kp

When solving for Kp do we have to represent the products and reactants as partial pressures?
by Nathan Rothschild_2D
Sun Dec 08, 2019 9:38 am
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 97
Views: 19988

Re: Final Jitters

Just believe in yourself. Remember you earned your way into this school, have been in this course all year, and can do this!!! Good luck everyone
by Nathan Rothschild_2D
Sat Dec 07, 2019 2:00 pm
Forum: Biological Examples
Topic: Vitamin b12
Replies: 1
Views: 31

Re: Vitamin b12

It's an important biological catalyst. It's because of how easy the bond is broken (metal-carbon bond) and the ability for the ion to change from one oxidation state to another.
by Nathan Rothschild_2D
Sat Dec 07, 2019 1:55 pm
Forum: Naming
Topic: Naming quizlet
Replies: 1
Views: 34

Naming quizlet

here's a quizlet of the names of ligands and some names for metals are included as well
https://quizlet.com/_7niofk?x=1jqt&i=dsn2r
by Nathan Rothschild_2D
Sat Dec 07, 2019 1:47 pm
Forum: Naming
Topic: Metals
Replies: 6
Views: 27

Re: Metals

Correction sorry, only some metals come from latin, so only the ones that do can be changed to their latin meaning when the complex has an overall negative charge.
by Nathan Rothschild_2D
Sat Dec 07, 2019 1:37 pm
Forum: Naming
Topic: Metals
Replies: 6
Views: 27

Re: Metals

Read page 723 it'll explain when you use these names. You don't have to use them always, in fact you shouldn't. It explains it well.(it's basically when the complex has a negative charge you use the Latin name with a suffix depending on the metal's charge)
by Nathan Rothschild_2D
Sat Dec 07, 2019 12:41 pm
Forum: Naming
Topic: Metals
Replies: 6
Views: 27

Metals

I know we need to know the Latin name for metals when naming coordination compounds, but which metals do we have to know the Latin names for?
by Nathan Rothschild_2D
Sat Dec 07, 2019 12:38 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: HClO3
Replies: 2
Views: 27

HClO3

In class Dr. Lavelle drew HClO3 with the Hydrogen attached to the oxygen and I was wondering why it is attached to the oxygen and not the chlorine?
by Nathan Rothschild_2D
Sun Dec 01, 2019 11:34 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Amphoteric compounds
Replies: 4
Views: 28

Re: Amphoteric compounds

What is another example of an amphoteric compound
by Nathan Rothschild_2D
Sun Dec 01, 2019 11:05 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Textbook
Replies: 5
Views: 27

Re: Textbook

What chapters will the final consist of? so what reading should I do
by Nathan Rothschild_2D
Sun Dec 01, 2019 10:46 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Neutralization
Replies: 7
Views: 48

Re: Neutralization

It ends with a neutral pH after creating salt and water
by Nathan Rothschild_2D
Sun Dec 01, 2019 10:39 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Final Study Methods
Replies: 11
Views: 53

Re: Final Study Methods

I'd agree, the best way to review would be to read the book and I would also recommend getting his tests from last year and going through all the questions, as well as redoing this years.
by Nathan Rothschild_2D
Sun Dec 01, 2019 10:36 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Notes of November 25
Replies: 4
Views: 50

Re: Notes of November 25

I was as well could you possibly email them to me? I'd be forever grateful. My email is zevrothschild2001@gmail.com
by Nathan Rothschild_2D
Sun Dec 01, 2019 10:32 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Why sulfuric acid is stronger than phosphoric acid
Replies: 4
Views: 41

Re: Why sulfuric acid is stronger than phosphoric acid

How did you post the images there? I've tried to do the same to post replies but don't know how.
by Nathan Rothschild_2D
Sun Nov 24, 2019 3:18 pm
Forum: Biological Examples
Topic: Cisplatin
Replies: 15
Views: 92

Re: Cisplatin

Where can I find this in the book so I can read more on it?
by Nathan Rothschild_2D
Sun Nov 24, 2019 3:17 pm
Forum: Biological Examples
Topic: Heme complex
Replies: 8
Views: 48

Re: Heme complex

How would something like this appear on a test? would we define it or say why it's needed or what?
by Nathan Rothschild_2D
Sun Nov 24, 2019 3:11 pm
Forum: Naming
Topic: Homework problems Week 9
Replies: 4
Views: 27

Re: Homework problems Week 9

Do we have discussions the day before thanksgiving(Wednesday)?
by Nathan Rothschild_2D
Sun Nov 24, 2019 3:06 pm
Forum: Naming
Topic: [Co(NH3)5Cl]Cl H2O
Replies: 4
Views: 31

Re: [Co(NH3)5Cl]Cl H2O

We are supposed to recognize and memorize the table, there are also many quizlets that I found that are very helpful for memorizing them.
by Nathan Rothschild_2D
Sun Nov 24, 2019 3:02 pm
Forum: Naming
Topic: Final Format
Replies: 6
Views: 27

Re: Final Format

Will it be composed of questions equally spread out from the year or will a majority come from the end of the year because we didn't have any midterms test us on end concepts?
by Nathan Rothschild_2D
Sun Nov 24, 2019 2:59 pm
Forum: Naming
Topic: Naming
Replies: 3
Views: 25

Re: Naming

I believe I heard that we should know the "name" column
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:23 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizable vs polarizing power
Replies: 5
Views: 48

Re: Polarizable vs polarizing power

So what would be the most polarizable element?
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:22 pm
Forum: Dipole Moments
Topic: Cancelling dipole moments
Replies: 9
Views: 74

Re: Cancelling dipole moments

Can someone give another example of a canceling dipole moment?
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:22 pm
Forum: Bond Lengths & Energies
Topic: Lone pairs
Replies: 7
Views: 68

Re: Lone pairs

If a lone pair is a radical would it have a weaker repulsion than a complete lone pair?
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:20 pm
Forum: Bond Lengths & Energies
Topic: Test 2 Topics
Replies: 40
Views: 364

Re: Test 2 Topics

I believe it's bonds, which bond has a greater angle between them, vsper, bond strengths, and shapes and structures
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:15 pm
Forum: Dipole Moments
Topic: Hydrogen bonds
Replies: 17
Views: 88

Re: Hydrogen bonds

What is the strongest and least strongest of the hydrogen bonds?
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:03 pm
Forum: Bond Lengths & Energies
Topic: Strongest Bonds
Replies: 11
Views: 87

Re: Strongest Bonds

Should we know about how much energy it takes to break each bond?
by Nathan Rothschild_2D
Sun Nov 17, 2019 11:00 pm
Forum: Administrative Questions and Class Announcements
Topic: test 2
Replies: 7
Views: 57

Re: test 2

Does anyone know what page in the book has all of the shapes?
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:47 pm
Forum: Sigma & Pi Bonds
Topic: Quantum Numbers
Replies: 9
Views: 62

Re: Quantum Numbers

How do you tell ML again and can someone explain what it is?
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:45 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charge
Replies: 16
Views: 69

Re: Formal charge

Get as many as you can to 0, and ensure that the center has a formal charge of 0.
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:35 pm
Forum: Lewis Structures
Topic: Electronegative
Replies: 14
Views: 56

Re: Electronegative

Why is Nitrogen more electronegative than Oxygen but has a lower first ionization energy.
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:25 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polar vs covalent
Replies: 7
Views: 31

Re: Polar vs covalent

Ionic bonds involve the transfer of electrons from one element to another while covalent results from the sharing.
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:22 pm
Forum: Resonance Structures
Topic: Resonance Structures
Replies: 18
Views: 109

Re: Resonance Structures

Say one way to draw the lewis structure CO2 was written as, 0-C=O(with sets electrons above the carbon and Oxygen), then the example of its resonance structure would be O=C-O. It is the rearranging or redrawing of bonds that does not change the structure itself. Please note this is not the correct l...
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:13 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge and Resonance
Replies: 5
Views: 23

Re: Formal Charge and Resonance

Formal charges will give you the most stable structure, meaning you then should be able to tell based off the most stable structure if the molecule has resonance structures.
by Nathan Rothschild_2D
Sun Nov 10, 2019 11:09 pm
Forum: Octet Exceptions
Topic: Octet Rule exceptions
Replies: 14
Views: 111

Re: Octet Rule exceptions

Can someone explain why these elements are exceptions?
by Nathan Rothschild_2D
Sun Nov 03, 2019 10:24 pm
Forum: Quantum Numbers and The H-Atom
Topic: Ms and ML
Replies: 6
Views: 45

Re: Ms and ML

I understand that ms is 1/2 or -1/2 but why is this? I understand what each value means but is there a specific reason it is always these values?
by Nathan Rothschild_2D
Sun Nov 03, 2019 10:20 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Degenerate orbitals
Replies: 4
Views: 39

Re: Degenerate orbitals

Could you give another example of a degenerate orbital or is hydrogen the only one?
by Nathan Rothschild_2D
Sun Nov 03, 2019 10:15 pm
Forum: Electronegativity
Topic: definitions
Replies: 8
Views: 60

Re: definitions

Will we have to calculate either electron affinity or ionization energy or simply just know what they are? and if we do have to calculate them how do we do so?
by Nathan Rothschild_2D
Sun Nov 03, 2019 10:00 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: polarizing power
Replies: 3
Views: 16

Re: polarizing power

So the way to tell what has more polarizing power would be to see which cation is more polar?
by Nathan Rothschild_2D
Sun Nov 03, 2019 9:53 pm
Forum: Bond Lengths & Energies
Topic: Test?
Replies: 8
Views: 98

Re: Test?

Will the midterm cover topics covered by the first test?
by Nathan Rothschild_2D
Sun Nov 03, 2019 9:44 pm
Forum: *Shrodinger Equation
Topic: Schrondiger's Equation
Replies: 6
Views: 55

Re: Schrondiger's Equation

Will the test specifically say using Schrondiger's equation or should we just know to use it? If anyone has seen old tests and the test contained Schrondiger's equation how did he ask?
by Nathan Rothschild_2D
Sun Nov 03, 2019 9:42 pm
Forum: Ionic & Covalent Bonds
Topic: Strength and Length
Replies: 18
Views: 109

Re: Strength and Length

When in terms of double and single bonds, the double bonds are shorter and contain a stronger bond called a pi bond in addition to a sigma bond, opposed to just a sigma bond like the longer single bond contains.
by Nathan Rothschild_2D
Sun Oct 27, 2019 7:50 pm
Forum: Dipole Moments
Topic: dipole moments
Replies: 2
Views: 183

Re: dipole moments

Do other factors such as the size of a molecule affect dipole moments?
by Nathan Rothschild_2D
Sun Oct 27, 2019 7:47 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 14
Views: 75

Re: Electronegativity

Is there a way to calculate electronegativity, like a formula, and if so do we need to know it? In order to get exact electronegativity.
by Nathan Rothschild_2D
Sun Oct 27, 2019 7:45 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 6
Views: 266

Re: Electronegativity

Another way to look at this is by using the radius of an atom or element. The electronegativity is inversely related to radius, so since oxygen has a smaller radius, its electron negativity is higher!!
by Nathan Rothschild_2D
Sun Oct 27, 2019 7:43 pm
Forum: Ionic & Covalent Bonds
Topic: Double and single bond lengths
Replies: 6
Views: 35

Re: Double and single bond lengths

What makes a sigma bond stronger than a pi pond? Is it just shorter or are there any other characteristics that differ?
by Nathan Rothschild_2D
Sun Oct 27, 2019 7:36 pm
Forum: Ionic & Covalent Bonds
Topic: Charges
Replies: 4
Views: 33

Re: Charges

How did you know that you need 32 electrons for a full outer shell? Is this something we remember, can calculate, or is there another way we can find out?
by Nathan Rothschild_2D
Sun Oct 27, 2019 7:33 pm
Forum: Ionic & Covalent Bonds
Topic: Homework
Replies: 13
Views: 109

Re: Homework

I would recommend doing it on the chemical bonds section but since part of this last week included the quantum realm, it should still be okay to do some problems from that section.
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:55 pm
Forum: Einstein Equation
Topic: Alternative unit for J
Replies: 4
Views: 39

Re: Alternative unit for J

In what types of circumstances would it be necessary for us to convert J into these units? Can someone give a sample problem or example?
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:50 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 116
Views: 11250

Re: All students read this sig fig post [ENDORSED]

If you must round sig figs earlier in a problem because something has so many sig figs it is a nuisance to write out then just add 3 sig figs to whatever your final answers number of sig figs should be when rounding. I use this for just cases of multiplication, division, addition, and subtraction. I...
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:44 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 2781

Re: Test 1 [ENDORSED]

The tests are not curved. The class is completely point based meaning the percent you received on the test is your grade on the test. I believe the class is out of 500 points and all the assignments, tests, midterm, and final will add up to 500 points. If you received a 50 on your test then you got ...
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:38 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular to Empirical Formula
Replies: 10
Views: 116

Re: Molecular to Empirical Formula

You can always check your molecular formula if converting from empirical by finding the molar mass of your molecule and making sure it matches with the molar mass given in the equation.
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:34 pm
Forum: Molarity, Solutions, Dilutions
Topic: What is Molarity?
Replies: 11
Views: 107

Re: What is Molarity?

How do we find normality and what is normality? I have always had troubles with this concept and was looking for clarification.
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:30 pm
Forum: *Black Body Radiation
Topic: Black Body Radiation
Replies: 12
Views: 111

Re: Black Body Radiation

Wait if black body radiation absorbs all radiation then why does it emit any radiation? Why would it not be like how a black hole does not emit any light?
by Nathan Rothschild_2D
Sun Oct 20, 2019 11:03 pm
Forum: DeBroglie Equation
Topic: When to combine equations
Replies: 10
Views: 68

Re: When to combine equations

You need to make sure to include units as you go through your problem and certain equations can be used to be plugged in for constants that are contained in your problem. Then at the end you must check to see that you have crossed out all undesired units so your final answer is in the desired units.
by Nathan Rothschild_2D
Sun Oct 20, 2019 10:20 pm
Forum: *Shrodinger Equation
Topic: derivation
Replies: 5
Views: 33

Re: derivation

Do we know where he gets his equation sheets so we can know what equations will be given on the test? Such as prefixes, percent yield, etc.
by Nathan Rothschild_2D
Sun Oct 13, 2019 11:55 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Wavelength Plausibility
Replies: 30
Views: 846

Re: Wavelength Plausibility

The problems we have been doing have been involving visible light. 10^-15 would fall in the ultraviolet spectrum and would not be detectable to the human eye.
by Nathan Rothschild_2D
Sun Oct 13, 2019 11:51 pm
Forum: *Shrodinger Equation
Topic: Schrodinger's Equation
Replies: 8
Views: 69

Re: Schrodinger's Equation

How does the wave function of an atom convert to quantum mechanics and how does whatever value Schrodinger's equation gives you convert to the wave function of an atom?
by Nathan Rothschild_2D
Sun Oct 13, 2019 11:48 pm
Forum: Properties of Light
Topic: Equations
Replies: 2
Views: 33

Re: Equations

De Broglie's equation is used to find wavelength of a particle with known a mass.
Heisenberg's equation is important in finding precise measurements with subatomic particles.
Schrodinger's equation finds allowable energy levels.
by Nathan Rothschild_2D
Sun Oct 13, 2019 11:39 pm
Forum: DeBroglie Equation
Topic: Diffraction
Replies: 4
Views: 38

Re: Diffraction

Constructive and destructive diffraction has to do with the peaks and troughs of the wavelengths involved. When the peak(high point) of a wavelength's wave hits the peak of another wavelength's wave it boosts the wavelength. If the wavelength's wave's peak instead hits the trough(low point) of the o...
by Nathan Rothschild_2D
Sun Oct 13, 2019 11:19 pm
Forum: *Black Body Radiation
Topic: Black Body
Replies: 6
Views: 90

Re: Black Body

Where would say a black hole fit in relation to a black body? Seeing as it absorbs all light wavelengths would is be considered a black body?
by Nathan Rothschild_2D
Fri Oct 04, 2019 1:49 pm
Forum: Balancing Chemical Reactions
Topic: Compound names
Replies: 11
Views: 99

Re: Compound names

Does anyone know what page in the book has the prefixes and suffixes and what they are?
by Nathan Rothschild_2D
Fri Oct 04, 2019 1:48 pm
Forum: Empirical & Molecular Formulas
Topic: When should one start rounding in a problem?
Replies: 11
Views: 115

Re: When should one start rounding in a problem?

in response to how to know how many sig figs to use in the end, you should use the question in order to determine the number of sig figs in the end. So if the question gives 3.48 grams then your final answer should be 3 sig figs because that's how many sig figs the question had
by Nathan Rothschild_2D
Fri Oct 04, 2019 1:40 pm
Forum: Empirical & Molecular Formulas
Topic: Difference between empirical and molecular formulas
Replies: 6
Views: 74

Difference between empirical and molecular formulas

What's the difference between an empirical and molecular formula and do you have any useful ways to remember the difference?
by Nathan Rothschild_2D
Fri Oct 04, 2019 1:36 pm
Forum: SI Units, Unit Conversions
Topic: Fundamental E.1
Replies: 5
Views: 68

Re: Fundamental E.1

and then don't forget to convert your final units in meters not just pm, making it 1.73 x 10^14 m
by Nathan Rothschild_2D
Fri Oct 04, 2019 1:30 pm
Forum: Balancing Chemical Reactions
Topic: Combustion
Replies: 12
Views: 118

Re: Combustion

Do oxidation and metabolism also produce H2O and CO2?
by Nathan Rothschild_2D
Fri Oct 04, 2019 10:55 am
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 116
Views: 11250

Re: All students read this sig fig post [ENDORSED]

No you don't have to write out every sig fig. If the final answer is 3 sig figs then you will be fine if you use 3 in the intermediary steps.
by Nathan Rothschild_2D
Fri Oct 04, 2019 10:52 am
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 116
Views: 11250

Re: All students read this sig fig post [ENDORSED]

Also don't forget any equations or constants that you are using to convert g to mols or anything else should not be taken into account for when figuring how many sig figs your answer should be in.

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