Search found 19 matches

by Laine Gruver 3C
Sat Mar 18, 2017 9:14 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Dienes? (Homework 1.21)
Replies: 1
Views: 520

Re: Dienes? (Homework 1.21)

Learn it just to be safe, from my understanding if it's in the homework problems it's fair game for the final.
by Laine Gruver 3C
Sun Mar 12, 2017 2:30 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Cyclo-isomers
Replies: 4
Views: 372

Cyclo-isomers

In quiz 3, there was a question about drawing three different cyclic isomers for C5H10. How do you do this?
by Laine Gruver 3C
Sat Mar 04, 2017 2:25 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1019036

Re: Post All Chemistry Jokes Here

Q: What substance has the formula HIJKLMNO?
A: Water.
by Laine Gruver 3C
Sat Mar 04, 2017 2:23 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1019036

Re: Post All Chemistry Jokes Here

A photon checks into a hotel and is asked if he needs help with his luggage. He says, "No, I'm traveling light."
by Laine Gruver 3C
Sat Mar 04, 2017 2:19 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1019036

Re: Post All Chemistry Jokes Here

lol
by Laine Gruver 3C
Tue Feb 14, 2017 7:15 pm
Forum: Balancing Redox Reactions
Topic: H+ and e-
Replies: 4
Views: 999

H+ and e-

When balancing redox half reactions and using e- and H+ to even out the charges on both sides of the equation, why do the H+ and e- not cancel each other out if they are on the same side of the equation?
by Laine Gruver 3C
Fri Feb 10, 2017 11:04 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Need help understanding standard hydrogen electrode
Replies: 1
Views: 211

Re: Need help understanding standard hydrogen electrode

Not sure if this answers your question entirely, but I believe the purpose of the standard hydrogen electrode (SHE) is to have a basis to compare all other electrodes to.
by Laine Gruver 3C
Wed Feb 01, 2017 9:27 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Adiabatic vs Isothermal
Replies: 2
Views: 444

Re: Adiabatic vs Isothermal

If I'm correct, an isothermal reaction means that the temperature remains constant, whereas an adiabatic process implies that no heat is exchanged between a system and its surroundings.
by Laine Gruver 3C
Fri Jan 27, 2017 5:43 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Enthalpy Units
Replies: 1
Views: 241

Enthalpy Units

I noticed in some of the textbook problems that for enthalpy, they seem to use both kJ/mol and kJ interchangeably. Can anyone help explain this to me?
by Laine Gruver 3C
Fri Jan 20, 2017 9:38 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard Enthalpy of Formation and Specific Heat Capacity [ENDORSED]
Replies: 1
Views: 294

Standard Enthalpy of Formation and Specific Heat Capacity [ENDORSED]

Does anyone know if on a test we would be given the standard enthalpy of formation or specific heat capacity for molecules we're working with? I'm assuming we would be given ones for more obscure molecules but I wasn't sure if we needed to memorize the more common ones.
by Laine Gruver 3C
Fri Jan 13, 2017 10:21 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Isolated Systems [ENDORSED]
Replies: 3
Views: 508

Re: Isolated Systems [ENDORSED]

There's truly no such thing as an isolated system, only very close to one, so I think you always have to read in between the lines as to what the problem is getting at.
by Laine Gruver 3C
Wed Nov 30, 2016 6:01 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Hydronium and Hydroxide
Replies: 2
Views: 336

Re: Hydronium and Hydroxide

We have to include all the essential parts of the reaction, and the reaction would not occur without water accepting a proton to become a hydronium ion.
by Laine Gruver 3C
Thu Nov 17, 2016 12:36 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1019036

Re: Post All Chemistry Jokes Here

when all your friends are english majors:
by Laine Gruver 3C
Sat Oct 29, 2016 11:38 am
Forum: Hybridization
Topic: s and p hybridization
Replies: 2
Views: 298

s and p hybridization

When finding the hybridization of a molecule like benzene, C6H6, or any other molecule with some sp hybridization, why is it that we don't say s^2 when we say p^2, p^3, etc?
by Laine Gruver 3C
Sat Oct 22, 2016 11:47 pm
Forum: Trends in The Periodic Table
Topic: Px py and pz
Replies: 4
Views: 908

Re: Px py and pz

The 'p' refers to the p-block of the periodic table, with that specific type of orbital. As far as I understand, x, y, and z represent the different orientations that a p-orbital can have. I've included a picture that represents the orientations and where their nodes fall.
by Laine Gruver 3C
Fri Oct 14, 2016 6:53 pm
Forum: Ionic & Covalent Bonds
Topic: The Octet
Replies: 3
Views: 462

Re: The Octet

I only just looked this up on wikipedia, so someone please correct me if I'm wrong, but it says that the formula is that the nth shell can hold up to 2(n^2) electrons, so that would mean it is possible to have more than 8 valence electrons.
by Laine Gruver 3C
Thu Oct 06, 2016 9:09 pm
Forum: Administrative Questions and Class Announcements
Topic: Rounding and Accuracy During Tests
Replies: 4
Views: 549

Re: Rounding and Accuracy During Tests

To add onto this, what is the policy like for partial credit? i.e., if a problem has multiple parts and we make an arithmetic mistake in an early part that affects the subsequent answers, will we receive absolutely no credit?
by Laine Gruver 3C
Tue Sep 27, 2016 8:41 pm
Forum: Balancing Chemical Reactions
Topic: How familiar should we be with Naming compounds? [ENDORSED]
Replies: 8
Views: 1232

Re: How familiar should we be with Naming compounds? [ENDORSED]

I'm not sure if this will be helpful to you, but I thought it was helpful in figuring out how to name compounds: http://www.chemteam.info/Nomenclature/H ... pounds.jpg

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