Search found 134 matches

by Callum Guo 1H
Mon Mar 16, 2020 5:52 pm
Forum: Phase Changes & Related Calculations
Topic: state functions
Replies: 9
Views: 117

Re: state functions

state functions are those that are not path-dependent. So the path it takes for it to get from it's intital to final state doesn't matter
by Callum Guo 1H
Mon Mar 16, 2020 5:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem Community Posts Due Date
Replies: 13
Views: 238

Re: Chem Community Posts Due Date

we have until Wednesday
by Callum Guo 1H
Mon Mar 16, 2020 5:49 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation energy
Replies: 1
Views: 38

Re: Activation energy

not sure if we are allowed to post answers online lol.
by Callum Guo 1H
Mon Mar 16, 2020 5:29 pm
Forum: General Rate Laws
Topic: rate laws
Replies: 8
Views: 105

Re: rate laws

rate is determined by the slow step
by Callum Guo 1H
Mon Mar 16, 2020 5:29 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: calculating standard cell potential
Replies: 6
Views: 66

Re: calculating standard cell potential

Find out which one is the cathode and which one is the anode. And then plug it into the equation E= Ereduction - Eoxidation
by Callum Guo 1H
Tue Mar 10, 2020 8:49 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2 Grades
Replies: 22
Views: 235

Re: Test 2 Grades

Test grades are on myucla right now
by Callum Guo 1H
Tue Mar 10, 2020 8:48 pm
Forum: Student Social/Study Group
Topic: Midterm Question 3
Replies: 1
Views: 85

Re: Midterm Question 3

You probably can't find exact problems that match up (otherwise there would be no point testing). Try looking at acid/base problems in like 6D
by Callum Guo 1H
Tue Mar 10, 2020 8:43 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: 7E.5
Replies: 1
Views: 17

Re: 7E.5

catalysts can be canceled out they just are necessary for the reaction to start in the first place and aren't created. Which is different than an intermediate because they are created through reactions and then canceled out.
by Callum Guo 1H
Tue Mar 10, 2020 8:42 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Will We
Replies: 2
Views: 46

Re: Will We

Yeah if gives you the other variables I assume you can just solve for Ea
by Callum Guo 1H
Tue Mar 10, 2020 8:40 pm
Forum: Phase Changes & Related Calculations
Topic: delta G0 versus delta G
Replies: 15
Views: 180

Re: delta G0 versus delta G

Delta G0 is at standard conditions while delta G can be at any
by Callum Guo 1H
Tue Mar 10, 2020 8:38 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Finding k1 when given two temperatues
Replies: 6
Views: 85

Re: Finding k1 when given two temperatues

the question will usually tell you which ones match up
by Callum Guo 1H
Tue Mar 10, 2020 6:21 pm
Forum: Student Social/Study Group
Topic: The Final
Replies: 5
Views: 180

Re: The Final

I think it's best to wait to see what Lavelle will say. He'll probably send an email.
by Callum Guo 1H
Tue Mar 10, 2020 6:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2
Replies: 5
Views: 94

Re: Test 2

Lavelle will probably send some sort of announcement. I assume he'll put it in the front office for us to pick up like our finals for 14A?
by Callum Guo 1H
Tue Mar 10, 2020 6:16 pm
Forum: General Rate Laws
Topic: orders
Replies: 6
Views: 63

Re: orders

add up the orders of all of the substances.
by Callum Guo 1H
Tue Mar 10, 2020 6:14 pm
Forum: Balancing Redox Reactions
Topic: Half Reactions
Replies: 15
Views: 89

Re: Half Reactions

First balance all elements expect H and O. Balance O next using H2O and balance H with H+. Then you balance out charges by adding e-.
by Callum Guo 1H
Tue Mar 10, 2020 6:10 pm
Forum: Van't Hoff Equation
Topic: Van’t Hoff Equation
Replies: 11
Views: 164

Re: Van’t Hoff Equation

ln(K2/K1)= (-DeltaH/R)(1/T2 - 1/T1)


you can use it to calculate K value at a temperature given the K value at another temperature
by Callum Guo 1H
Tue Mar 10, 2020 6:09 pm
Forum: Administrative Questions and Class Announcements
Topic: Email Announcement
Replies: 8
Views: 206

Re: Email Announcement

Lavelle will probably send a email addressing it soon.
by Callum Guo 1H
Tue Mar 10, 2020 6:08 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 21
Views: 278

Re: Final

Lets just wait until he responds
by Callum Guo 1H
Sun Mar 01, 2020 4:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213895

Re: Post All Chemistry Jokes Here

Did you know that you can cool yourself to -273.15˚C and still be 0k?
by Callum Guo 1H
Sun Mar 01, 2020 4:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213895

Re: Post All Chemistry Jokes Here

What do you get when you mix sulfur, tungsten, and silver?
SWAG.
by Callum Guo 1H
Sun Mar 01, 2020 4:48 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Flipping the sign
Replies: 10
Views: 65

Re: Flipping the sign

E is usually given in reduction reactions. If you have an oxidation reaction, you flip it.
by Callum Guo 1H
Sun Mar 01, 2020 4:41 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: salt bridge
Replies: 11
Views: 47

Re: salt bridge

Maintain electrical balance between the anode and cathode
by Callum Guo 1H
Sun Mar 01, 2020 4:41 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: how can you tell
Replies: 11
Views: 103

Re: how can you tell

reactions that are short are kinetically controlled while longer ones are thermo controlled
by Callum Guo 1H
Sat Feb 22, 2020 10:47 pm
Forum: General Science Questions
Topic: What are Workshops?
Replies: 10
Views: 186

Re: What are Workshops?

I think you just do practice problems in them
by Callum Guo 1H
Sat Feb 22, 2020 10:46 pm
Forum: Balancing Redox Reactions
Topic: Basic conditions
Replies: 6
Views: 55

Re: Basic conditions

its the same as acidic solution expect you balance out the H+ with OH-
by Callum Guo 1H
Sat Feb 22, 2020 10:45 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Hg
Replies: 2
Views: 23

Re: Hg

hg2 is a covalently bounded Mercury molecule while 2hg is 2 separate hg ions
by Callum Guo 1H
Sat Feb 22, 2020 10:45 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 5G.15
Replies: 3
Views: 46

Re: 5G.15

probably a typo then if 3 people got the same answer
by Callum Guo 1H
Sat Feb 22, 2020 10:44 pm
Forum: Student Social/Study Group
Topic: Midterm 3D
Replies: 3
Views: 65

Re: Midterm 3D

at ph 6 there is more products than reactants so it would be more negative
by Callum Guo 1H
Sat Feb 22, 2020 10:37 pm
Forum: Administrative Questions and Class Announcements
Topic: Curve?
Replies: 5
Views: 50

Re: Curve?

I think the syllabus says he doesn't curve grades but he might adjust your grade at the end.
by Callum Guo 1H
Sat Feb 22, 2020 10:36 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Salt Bridge
Replies: 10
Views: 83

Re: Salt Bridge

It is used to maintain a charge balance
by Callum Guo 1H
Sun Feb 16, 2020 5:59 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: 3/2R & 5/2R
Replies: 9
Views: 135

Re: 3/2R & 5/2R

Cp is constant pressure (5/2R) Cv is constant volume (3/2R)
by Callum Guo 1H
Sat Feb 15, 2020 3:19 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Joules or KJ?
Replies: 14
Views: 176

Re: Joules or KJ?

I don't think it matters unless the question specifically asks for a unit
by Callum Guo 1H
Sat Feb 15, 2020 3:19 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs free energy
Replies: 5
Views: 48

Re: Gibbs free energy

yes, gibbs free energy is a state function
by Callum Guo 1H
Sat Feb 15, 2020 3:18 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Delta U = 0
Replies: 8
Views: 148

Re: Delta U = 0

for an isothermal process
by Callum Guo 1H
Sat Feb 15, 2020 3:17 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Negative work
Replies: 14
Views: 186

Re: Negative work

when your system does work. so in this class, most of the time its when a gas expands.
by Callum Guo 1H
Sat Feb 15, 2020 3:17 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Boltzmann Equation
Replies: 10
Views: 77

Re: Boltzmann Equation

You use it to find residual energy. Its useful if you have the number of particles and the amount of states it can be in
by Callum Guo 1H
Sun Feb 09, 2020 7:27 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Cp/Cv
Replies: 7
Views: 62

Re: Cp/Cv

i think just assume constant pressure.
by Callum Guo 1H
Sun Feb 09, 2020 7:26 pm
Forum: Phase Changes & Related Calculations
Topic: Heating Curve Phase Changes
Replies: 11
Views: 69

Re: Heating Curve Phase Changes

It takes energy to change a phase from one to another. For example, if you're heating Ice into liquid water, it'll take a certain amount of energy to get it from a solid to a liquid. This is the reason why steam at 100 degrees Celsius causes harsher burns than liquid water at 100 degrees Celsius (be...
by Callum Guo 1H
Sun Feb 09, 2020 7:23 pm
Forum: Administrative Questions and Class Announcements
Topic: memorizing things?
Replies: 13
Views: 101

Re: memorizing things?

i think all the equations are given to us? You will have "memorize"/understand some conceptual things because not everything is calculations
by Callum Guo 1H
Sun Feb 09, 2020 7:21 pm
Forum: Administrative Questions and Class Announcements
Topic: slides
Replies: 8
Views: 86

Re: slides

no slides : (
by Callum Guo 1H
Sun Feb 09, 2020 7:21 pm
Forum: Phase Changes & Related Calculations
Topic: Heat & Temperature of Phase Changes
Replies: 5
Views: 27

Re: Heat & Temperature of Phase Changes

It takes energy to change phases. (heat of vaporization, heat of fusion)
by Callum Guo 1H
Sun Feb 09, 2020 7:19 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Second Law Thermodynamics
Replies: 4
Views: 50

Re: Second Law Thermodynamics

yeah, the second law says that entropy of the universe is increasing
by Callum Guo 1H
Sun Feb 02, 2020 1:43 pm
Forum: Phase Changes & Related Calculations
Topic: Multiple Phase Changes
Replies: 4
Views: 43

Re: Multiple Phase Changes

You have to account for energy it takes for changes in phases and the difference in specific heat for different phases.
by Callum Guo 1H
Sun Feb 02, 2020 1:38 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Constant pressure
Replies: 19
Views: 137

Re: Constant pressure

Constant external pressure
by Callum Guo 1H
Sun Feb 02, 2020 1:38 pm
Forum: Calculating Work of Expansion
Topic: Gas constant
Replies: 5
Views: 39

Re: Gas constant

There is a chart of gas constants. Match up R with the correct units.
by Callum Guo 1H
Sun Feb 02, 2020 1:37 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Internal energy = State function
Replies: 4
Views: 32

Re: Internal energy = State function

Internal energy remains constant throughout the reaction (first law of thermo) so it doesn't matter how you get from the initial to final values.
by Callum Guo 1H
Sun Feb 02, 2020 1:36 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Phase change
Replies: 20
Views: 131

Re: Phase change

Positive because you add energy
by Callum Guo 1H
Sun Feb 02, 2020 1:36 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Definition of First Law
Replies: 9
Views: 45

Re: Definition of First Law

It's conservation of energy: energy is can't be created or destroyed. So the total energy of a internal system remains constant.
by Callum Guo 1H
Sun Jan 26, 2020 9:05 pm
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

Trying doing the opposite of what you did (i.e. since its -b plus or minus ... , try minus if you did plus and plus if you did minus)
by Callum Guo 1H
Sun Jan 26, 2020 8:45 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Pressure & temperature in chemical equilibria
Replies: 3
Views: 25

Re: Pressure & temperature in chemical equilibria

Pressure shifts the reaction to the side with the least moles of gas if you add gas and the opposite if you remove gas

Temperature depends on whether or not the reaction is endothermic or exothermic
by Callum Guo 1H
Sun Jan 26, 2020 5:45 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pH
Replies: 7
Views: 65

Re: pH

You would probably take the 10^-pka to convert it into Ka and then make a ICE table to find the concentration of H+ ions. After that, you would take the -log of the H+ concentration.
by Callum Guo 1H
Sun Jan 26, 2020 5:43 pm
Forum: Phase Changes & Related Calculations
Topic: Steam vs Water
Replies: 4
Views: 30

Re: Steam vs Water

It takes energy to convert liquid into a gas. During this period of time, more energy is added to the substance (water) without changing the temperture. Thus, you can have a liquid and a gas at the same temperature but the gas would have much more energy
by Callum Guo 1H
Sat Jan 25, 2020 9:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Acid and Bases
Replies: 4
Views: 30

Re: Acid and Bases

Make an ICE table and solve for H+ concentration. Find the pH by taking the -log of it, and then subtract that value from 14 to find poh
by Callum Guo 1H
Sat Jan 25, 2020 9:56 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Burns: Steam or Water
Replies: 4
Views: 38

Re: Burns: Steam or Water

It takes energy for any substance to move from liquid to gas state. During this period in which bonds are being broken, energy added to the substances does not increase the temperature. Therefore, you could have steam that is 100 degrees with more energy compared to 100 degree water.
by Callum Guo 1H
Sat Jan 25, 2020 9:54 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Acid and Bases
Replies: 3
Views: 31

Re: Acid and Bases

Usually, you would look at Ka value and set up an ICE table; however, since sulfuric acid is an strong acid, the reaction goes to completion and you can just find the concentration of [H+] via stoich and then take the -log of it.
by Callum Guo 1H
Sat Jan 25, 2020 9:51 pm
Forum: Phase Changes & Related Calculations
Topic: State Function
Replies: 7
Views: 52

Re: State Function

the path a reaction takes does not change the enthalpy of the reaction
by Callum Guo 1H
Sun Jan 19, 2020 9:03 pm
Forum: General Science Questions
Topic: test 1
Replies: 8
Views: 78

Re: test 1

It's during your discussion this week
by Callum Guo 1H
Sun Jan 19, 2020 6:24 pm
Forum: Phase Changes & Related Calculations
Topic: lecture on 1/17
Replies: 3
Views: 59

Re: lecture on 1/17

On Friday, we didn't really learn new material. We just did application of what we learned and some problems
by Callum Guo 1H
Sun Jan 19, 2020 6:23 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: X was ignored
Replies: 27
Views: 167

Re: X was ignored

The value of x changes 0.1 so little that it's negligible
by Callum Guo 1H
Sun Jan 19, 2020 5:35 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ICE tables
Replies: 3
Views: 32

Re: ICE tables

You usually use ICE tables to find the concentration of a reactant or product given that the reaction does not go to completion (at equilibrium there are both reactants and products still being formed).
by Callum Guo 1H
Sun Jan 19, 2020 5:33 pm
Forum: Ideal Gases
Topic: response to change in equilibria
Replies: 3
Views: 26

Re: response to change in equilibria

The easiest way to think about it is if you have 2 moles of gas on onside and 1 mole of gas on the other. If you increase the pressure, the reaction will favor the side with 1 mole of gas.
by Callum Guo 1H
Sun Jan 19, 2020 5:28 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pH vs. pOH
Replies: 13
Views: 97

Re: pH vs. pOH

to calculate pOH. You find the concentration of OH- molecules and then take the -log[OH-] to find the pOH
by Callum Guo 1H
Sun Jan 19, 2020 5:26 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pKa
Replies: 13
Views: 83

Re: pKa

Lower pKa means a stronger acid
by Callum Guo 1H
Sun Jan 19, 2020 12:51 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Biological examples- ATP hydrolysis, osmotic pressure
Replies: 1
Views: 28

Re: Biological examples- ATP hydrolysis, osmotic pressure

There some stuff on page 442 of the textbook. You should just go through the chapters and find these sections
by Callum Guo 1H
Tue Jan 14, 2020 6:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 1
Replies: 7
Views: 80

Re: Test 1

We'll probably go over what we will have to know on the test this week.
by Callum Guo 1H
Tue Jan 14, 2020 6:21 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Endothermic and exothermic reactions
Replies: 11
Views: 548

Re: Endothermic and exothermic reactions

Endothermic reactions favor product formation if the temperature increases and vice versa. Exothermic reactions favor reactant formation if temperture increase. The opposite is true if temperture decreases. Equations tend to resist change by doing the opposite of what is happening around them
by Callum Guo 1H
Tue Jan 14, 2020 6:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium constants table
Replies: 4
Views: 42

Re: Equilibrium constants table

Temperature is how you decide between the three. There should be a colmum that shows temperature for and a given K for that
by Callum Guo 1H
Tue Jan 14, 2020 6:15 pm
Forum: General Science Questions
Topic: Test 1 [ENDORSED]
Replies: 13
Views: 157

Re: Test 1 [ENDORSED]

it's week 3 during your discussion i think
by Callum Guo 1H
Tue Jan 14, 2020 6:14 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Autoprotolysis
Replies: 8
Views: 62

Re: Autoprotolysis

it's proton transfer between two of the same atom. one of them acts as a bronsted acid and the other as a bronsted base.
by Callum Guo 1H
Sat Jan 11, 2020 2:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Partial Pressure
Replies: 7
Views: 44

Re: Partial Pressure

Yeah its only used for gases. Every gas has a partial pressure and when all the partial pressures get added together, you get the total pressure of the system.
by Callum Guo 1H
Wed Jan 08, 2020 10:33 pm
Forum: Ideal Gases
Topic: Understanding Q
Replies: 19
Views: 132

Re: Understanding Q

Yes, solving for Q is the same way you would solve for K
by Callum Guo 1H
Wed Jan 08, 2020 10:33 pm
Forum: Ideal Gases
Topic: PV=nRT equation manipulation
Replies: 13
Views: 182

Re: PV=nRT equation manipulation

You can change the equation around so that you can find the pressure of elements which helps you find the equilibrium for gases
by Callum Guo 1H
Wed Jan 08, 2020 10:25 pm
Forum: Ideal Gases
Topic: Ideal gas constant R
Replies: 10
Views: 553

Re: Ideal gas constant R

It depends if the pressure given is in atm or pascals
by Callum Guo 1H
Wed Jan 08, 2020 10:17 pm
Forum: Ideal Gases
Topic: non gases
Replies: 3
Views: 285

Re: non gases

Yes, the ideal gas law only applies to gases
by Callum Guo 1H
Wed Jan 08, 2020 10:13 pm
Forum: Ideal Gases
Topic: Understanding Q
Replies: 13
Views: 106

Re: Understanding Q

Yeah you only count things that are in aqeuous states and gas states if you are calculated the equilibrium for pressure
by Callum Guo 1H
Sat Dec 07, 2019 11:59 pm
Forum: Identifying Acidic & Basic Salts
Topic: 6D11 part e
Replies: 1
Views: 78

6D11 part e

Decide whether an aqueous solution of each of the following salts has a pH equal to, greater than, or less than 7. Write a chemical equation to justify your answer: AlCl3 The Cl doesn't factor into pH since it came from a strong acid. So you use the Al which would be Al3+ as an ion. But the solution...
by Callum Guo 1H
Sat Dec 07, 2019 10:24 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: acid constants
Replies: 1
Views: 37

Re: acid constants

no i dont think.
by Callum Guo 1H
Sat Dec 07, 2019 9:20 pm
Forum: Lewis Structures
Topic: ClF4+ Lewis Structure
Replies: 2
Views: 260

Re: ClF4+ Lewis Structure

I think F only forms only single bonds because of its electronegativity
by Callum Guo 1H
Sat Dec 07, 2019 9:15 pm
Forum: Calculating the pH of Salt Solutions
Topic: pH formula?
Replies: 21
Views: 610

Re: pH formula?

it's -log[h+] and i doubt we would need to derive it
by Callum Guo 1H
Sat Dec 07, 2019 6:40 pm
Forum: Naming
Topic: Latin Names
Replies: 3
Views: 40

Latin Names

How do you know if an element's name originates from a Latin name like Fe(ferrum)
by Callum Guo 1H
Mon Dec 02, 2019 9:29 am
Forum: Naming
Topic: hacks
Replies: 2
Views: 83

Re: hacks

naming for what?
by Callum Guo 1H
Mon Dec 02, 2019 8:51 am
Forum: Administrative Questions and Class Announcements
Topic: Final tips
Replies: 19
Views: 213

Re: Final tips

Probably go over your midterm, go over homework problems, and examples Lavelle emphasized in class.
by Callum Guo 1H
Mon Dec 02, 2019 8:51 am
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Community Posts
Replies: 10
Views: 145

Re: Chemistry Community Posts

I’m not sure, would like to know to lol
by Callum Guo 1H
Mon Dec 02, 2019 8:48 am
Forum: Identifying Acidic & Basic Salts
Topic: Final: Strong/ Weak Acids/Bases
Replies: 11
Views: 829

Re: Final: Strong/ Weak Acids/Bases

I think it would be helpful to know them
by Callum Guo 1H
Mon Dec 02, 2019 8:47 am
Forum: Calculating the pH of Salt Solutions
Topic: pH formula?
Replies: 21
Views: 610

Re: pH formula?

pH=-log[h+]
by Callum Guo 1H
Mon Dec 02, 2019 8:47 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH calcuations
Replies: 8
Views: 68

Re: pH calcuations

I think so, unless he gives us another one
by Callum Guo 1H
Fri Nov 29, 2019 2:44 pm
Forum: SI Units, Unit Conversions
Topic: midterm/final
Replies: 18
Views: 539

Re: midterm/final

probably like the midterm, mostly calculation with some conceptual problems.
by Callum Guo 1H
Fri Nov 29, 2019 2:43 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Strength and Weakness
Replies: 12
Views: 432

Re: Strength and Weakness

compare ka values
by Callum Guo 1H
Fri Nov 29, 2019 2:36 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Value of pH
Replies: 8
Views: 79

Re: Value of pH

yes it could go below negative. The way you calculate ph is -log[h+]
by Callum Guo 1H
Fri Nov 29, 2019 2:32 pm
Forum: Lewis Acids & Bases
Topic: HCl vs HF
Replies: 19
Views: 171

Re: HCl vs HF

HCL is a strong acid
by Callum Guo 1H
Sun Nov 24, 2019 6:38 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213895

Re: Post All Chemistry Jokes Here

What's Ba(Na2)?

a banana.
by Callum Guo 1H
Sun Nov 24, 2019 4:07 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213895

Re: Post All Chemistry Jokes Here

What weapon can you make from the elements potassium, nickel and iron? A KNiFe.
by Callum Guo 1H
Thu Nov 21, 2019 9:27 am
Forum: Hybridization
Topic: Quiz 2 Hybridization Question
Replies: 4
Views: 64

Re: Quiz 2 Hybridization Question

no hybridization was not on the test
by Callum Guo 1H
Thu Nov 21, 2019 9:24 am
Forum: Hybridization
Topic: for test 2
Replies: 7
Views: 77

Re: for test 2

i dont think so

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