Search found 59 matches

by Lydia Luong 4L
Sat Mar 16, 2019 1:50 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 787702

Re: Post All Chemistry Jokes Here

All the good Chemistry jokes Argon :(
by Lydia Luong 4L
Sat Mar 16, 2019 1:49 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 787702

Re: Post All Chemistry Jokes Here

Are you made out of Copper and Tellurium? Because you're CuTe!
by Lydia Luong 4L
Sat Mar 16, 2019 1:48 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 787702

Re: Post All Chemistry Jokes Here

OMG did you know that Oxygen and Magnesium were a couple?
by Lydia Luong 4L
Sat Mar 16, 2019 1:44 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Cp vs Cv
Replies: 6
Views: 24

Re: Cp vs Cv

Don't worry about it, they will tell you in the question :)
by Lydia Luong 4L
Sat Mar 16, 2019 1:42 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: vertical line in cell diagram
Replies: 4
Views: 21

Re: vertical line in cell diagram

No, only use the vertical line for solids
by Lydia Luong 4L
Sat Mar 16, 2019 1:40 am
Forum: General Rate Laws
Topic: Final
Replies: 9
Views: 47

Re: Final

I think you should just be careful with sig figs on the final just to be safe! I don't think it would be stressed that much, though.
by Lydia Luong 4L
Sat Mar 16, 2019 1:38 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Equation
Replies: 8
Views: 28

Re: Equation

Yes, assume A=1 unless otherwise stated.
by Lydia Luong 4L
Sat Mar 16, 2019 1:37 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Anode and Cathode
Replies: 8
Views: 44

Re: Anode and Cathode

Cathode is always on the right side of a cell diagram and anode is always on the left side.
by Lydia Luong 4L
Sat Mar 16, 2019 1:36 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Ka Kb = Kw
Replies: 5
Views: 32

Re: Ka Kb = Kw

You can use it to find the pH of a solution.
by Lydia Luong 4L
Sat Mar 16, 2019 1:34 am
Forum: Student Social/Study Group
Topic: Studying for the Final
Replies: 25
Views: 191

Re: Studying for the Final

I just found out that there's a past final online!
http://www.bruintestbank.com/chemistry/ ... lavalle-1/
by Lydia Luong 4L
Sat Mar 16, 2019 1:32 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: delta U
Replies: 4
Views: 26

Re: delta U

Yes, always add q and w!
by Lydia Luong 4L
Sat Mar 16, 2019 1:30 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Ecell
Replies: 4
Views: 23

Re: Ecell

Yes, if you calculate the Ecell by adding the Ecathode and the Eanode together, you need to change the sign of Eanode.
by Lydia Luong 4L
Sat Mar 16, 2019 1:28 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Rate of formation, rate in terms of loss
Replies: 3
Views: 14

Re: Rate of formation, rate in terms of loss

These phrases do not mean the same thing
by Lydia Luong 4L
Sat Mar 16, 2019 1:06 am
Forum: Administrative Questions and Class Announcements
Topic: Deriving
Replies: 3
Views: 22

Re: Deriving

Yeah, I believe your expectation is correct.
by Lydia Luong 4L
Sat Mar 16, 2019 1:04 am
Forum: Administrative Questions and Class Announcements
Topic: Past Finals
Replies: 4
Views: 53

Re: Past Finals

Thank you so much this post really helped me!
by Lydia Luong 4L
Sat Mar 16, 2019 12:59 am
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Cell Work
Replies: 4
Views: 22

Re: Cell Work

Use the nFE formula
by Lydia Luong 4L
Sat Mar 16, 2019 12:51 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Units
Replies: 1
Views: 9

Re: Units

kJ/mol
by Lydia Luong 4L
Sat Mar 16, 2019 12:50 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: applying Le Chatelier's Principle
Replies: 4
Views: 30

Re: applying Le Chatelier's Principle

This link helped me a lot with Le Chatelier's, hope it helps you out too! https://www.google.com/url?sa=i&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwj0udDplYbhAhUZGDQIHYFHDMgQjRx6BAgBEAU&url=https%3A%2F%2Fsocratic.org%2Fquestions%2Fwhat-is-le-chatelier-s-principle-in-chemist...
by Lydia Luong 4L
Sat Mar 16, 2019 12:45 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess's Law Problem (8.55 in the Sixth Edition)
Replies: 2
Views: 18

Re: Hess's Law Problem (8.55 in the Sixth Edition)

We must always make sure our equations are balanced first before we do anything else. Since there were 3 Oxygens in the products side, we must multiply Oxygen by 3/2 to balance the equation.
by Lydia Luong 4L
Sat Mar 16, 2019 12:31 am
Forum: *Enzyme Kinetics
Topic: what will we be given ?
Replies: 3
Views: 22

Re: what will we be given ?

I wouldn't worry about it! We will always be given enough to solve the problem.
by Lydia Luong 4L
Sat Mar 16, 2019 12:27 am
Forum: *Enzyme Kinetics
Topic: How do you tell if something is a catalyst vs an intermediate?
Replies: 13
Views: 56

Re: How do you tell if something is a catalyst vs an intermediate?

In the first step, a catalyst is a reactant and the intermediate is a product.
by Lydia Luong 4L
Sat Mar 16, 2019 12:24 am
Forum: Zero Order Reactions
Topic: writing rate
Replies: 2
Views: 11

Re: writing rate

Either is fine!
by Lydia Luong 4L
Sat Mar 16, 2019 12:23 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Exothermic vs Endothermic
Replies: 6
Views: 23

Re: Exothermic vs Endothermic

Yes, you are correct @hanna_maillard3B
by Lydia Luong 4L
Sat Mar 16, 2019 12:17 am
Forum: *Enzyme Kinetics
Topic: sig figs on the final
Replies: 2
Views: 14

Re: sig figs on the final

I would try to check your sig figs just in case!
by Lydia Luong 4L
Thu Dec 06, 2018 10:28 pm
Forum: Naming
Topic: Naming with bis-
Replies: 5
Views: 61

Re: Naming with bis-

Yes, you need to write bis- because the ligand includes a di-.
by Lydia Luong 4L
Thu Dec 06, 2018 10:24 pm
Forum: Bronsted Acids & Bases
Topic: Glucose as an acid
Replies: 3
Views: 32

Re: Glucose as an acid

I agree with the person above. I don't think it is either.
by Lydia Luong 4L
Thu Dec 06, 2018 10:23 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: S orbitals lower energy than p orbitals
Replies: 2
Views: 65

Re: S orbitals lower energy than p orbitals

electrons in the p field further away from the nucleus, which causes a higher nuclear attraction, since more distance requires more energy to pull it together.
by Lydia Luong 4L
Thu Dec 06, 2018 10:21 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Final Exam
Replies: 7
Views: 96

Re: Final Exam

Yes we do!
by Lydia Luong 4L
Thu Dec 06, 2018 10:20 pm
Forum: Amphoteric Compounds
Topic: BaO
Replies: 5
Views: 783

Re: BaO

You're right, the book's answer is wrong
by Lydia Luong 4L
Thu Dec 06, 2018 10:14 pm
Forum: Amphoteric Compounds
Topic: Amphoteric vs Amphiprotic
Replies: 4
Views: 48

Re: Amphoteric vs Amphiprotic

amphoteric --> can act as acid or base.
amphiprotic--> can donate or accept protons/hydrogen
by Lydia Luong 4L
Thu Dec 06, 2018 10:13 pm
Forum: Naming
Topic: Final Exam
Replies: 9
Views: 125

Re: Final Exam

I think we should just memorize it to be safe!
by Lydia Luong 4L
Thu Dec 06, 2018 10:12 pm
Forum: Lewis Acids & Bases
Topic: Strong Acids
Replies: 6
Views: 56

Re: Strong Acids

yes, HF is weaker than HI. longer bond = weaker
by Lydia Luong 4L
Thu Dec 06, 2018 10:10 pm
Forum: Bronsted Acids & Bases
Topic: donating or accepting proton
Replies: 2
Views: 30

Re: donating or accepting proton

yes
by Lydia Luong 4L
Thu Dec 06, 2018 10:09 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Size and Polarizability
Replies: 4
Views: 61

Re: Size and Polarizability

number of electrons
by Lydia Luong 4L
Thu Dec 06, 2018 10:04 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH calculation
Replies: 4
Views: 51

Re: pH calculation

The molarity is usually given to you!
by Lydia Luong 4L
Thu Dec 06, 2018 10:04 pm
Forum: Properties of Light
Topic: Speed of light
Replies: 13
Views: 124

Re: Speed of light

I haven't had any issues with using 3.0 x 10^8, I think you should be able to use this!
by Lydia Luong 4L
Fri Nov 09, 2018 2:01 pm
Forum: Bond Lengths & Energies
Topic: boiling points
Replies: 4
Views: 43

Re: boiling points

Compounds with stronger intramolecular forces will have higher boiling points, because it will be harder to break apart those bonds. Meanwhile, compounds with weaker intramolecular forces will have lower boiling points, because it doesn't take as much work to break apart those bonds.
by Lydia Luong 4L
Fri Nov 09, 2018 1:58 pm
Forum: SI Units, Unit Conversions
Topic: Angstrom
Replies: 5
Views: 156

Re: Angstrom

No, but I think Lavelle expects us to know its conversion.
by Lydia Luong 4L
Fri Nov 09, 2018 1:57 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent Bonds
Replies: 18
Views: 220

Re: Ionic vs Covalent Bonds

Ionic--> transfer of electrons, covalent--> sharing of electrons
by Lydia Luong 4L
Sun Nov 04, 2018 10:36 pm
Forum: Administrative Questions and Class Announcements
Topic: chem test tmrw
Replies: 6
Views: 129

Re: chem test tmrw

Yes, we get the formula sheet that we always get on tests :)
by Lydia Luong 4L
Sun Nov 04, 2018 10:34 pm
Forum: Electronegativity
Topic: Periodic Trends
Replies: 10
Views: 176

Re: Periodic Trends

For me, for electronegativity, I just remember that Fluorine is the most electronegative element.
by Lydia Luong 4L
Sun Nov 04, 2018 10:33 pm
Forum: Properties of Electrons
Topic: Electron Configuration
Replies: 7
Views: 83

Re: Electron Configuration

Yes, I think it should be [Kr]4d^10
by Lydia Luong 4L
Sun Nov 04, 2018 9:18 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge
Replies: 8
Views: 68

Re: Formal Charge

v= valence electrons, l= lone pairs, s= shared electrons
by Lydia Luong 4L
Sun Nov 04, 2018 9:16 pm
Forum: Ionic & Covalent Bonds
Topic: Test bank?
Replies: 9
Views: 156

Re: Test bank?

there aren't any tests in the test bank :(
by Lydia Luong 4L
Sun Nov 04, 2018 8:57 pm
Forum: Ionic & Covalent Bonds
Topic: Chem Midterm
Replies: 13
Views: 119

Re: Chem Midterm

eight free response questions!
by Lydia Luong 4L
Fri Oct 19, 2018 3:46 am
Forum: DeBroglie Equation
Topic: Rest Mass
Replies: 7
Views: 149

Re: Rest Mass

No, there are things that you cannot use De Broglie's equation on because they do not have rest mass. You can only use De Broglie's equation on things that have rest mass.
by Lydia Luong 4L
Fri Oct 19, 2018 3:08 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Video Modules
Replies: 7
Views: 101

Re: Video Modules

He hasn't uploaded any new modules yet that I know of.
by Lydia Luong 4L
Fri Oct 19, 2018 3:03 am
Forum: DeBroglie Equation
Topic: Energy=pc
Replies: 4
Views: 64

Re: Energy=pc

In the equation for kinetic energy, mass is not squared. Only velocity is.
by Lydia Luong 4L
Fri Oct 12, 2018 1:58 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Shells?
Replies: 7
Views: 196

Re: Shells?

I know that the s-, p-, d-, and f- represent how many electrons can fit in a certain shell, but would anyone also know why they're specifically labelled those letters? Does it stand for something ? The letters stand for sharp, principal, diffuse, and fundamental, but I wouldn't worry about knowing ...
by Lydia Luong 4L
Fri Oct 12, 2018 1:09 am
Forum: Properties of Light
Topic: speed of light
Replies: 8
Views: 103

Re: speed of light

I think 3.0 x 10^8 is fine!
by Lydia Luong 4L
Fri Oct 12, 2018 1:07 am
Forum: Balancing Chemical Reactions
Topic: question on "combustion" and "cooking"
Replies: 3
Views: 113

Re: question on "combustion" and "cooking"

Yes, I think we are supposed to know that the formula for the combustion of a molecule would be:
tha molecule + _O2 --> _H2O + _CO2.
by Lydia Luong 4L
Fri Oct 05, 2018 7:17 am
Forum: Limiting Reactant Calculations
Topic: When to use H vs H2
Replies: 7
Views: 103

Re: When to use H vs H2

I think you will have to multiply the molar mass of Hydrogen by two.
by Lydia Luong 4L
Thu Oct 04, 2018 11:06 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Accuracy and Precision
Replies: 4
Views: 53

Re: Accuracy and Precision

High accuracy is when your data results from your lab are close to the number that you were expecting to get from your prediction/calculation beforehand (how "right" your data results are,) even if your results only hit that "right" number only three times out of seven trials. Hi...
by Lydia Luong 4L
Thu Oct 04, 2018 10:36 pm
Forum: Empirical & Molecular Formulas
Topic: Writing Out Chemical Equation
Replies: 2
Views: 46

Re: Writing Out Chemical Equation

When writing out chemical compounds, the element with the positive charge always goes first. Hope this helps!
by Lydia Luong 4L
Thu Oct 04, 2018 10:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 787702

Re: Post All Chemistry Jokes Here

Did you know that you can cool yourself to -273.15˚C and still be 0k?

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