Search found 18 matches

by Matthew_Vargas_2G
Thu Mar 02, 2017 11:36 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1011245

Re: Post All Chemistry Jokes Here

Image
by Matthew_Vargas_2G
Thu Feb 23, 2017 10:06 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1011245

Re: Post All Chemistry Jokes Here

Image
by Matthew_Vargas_2G
Thu Feb 09, 2017 1:57 pm
Forum: Balancing Redox Reactions
Topic: 14.3
Replies: 2
Views: 238

Re: 14.3

Hey Ashley! So for this problem, the reason why there are 2 electrons added to the reactants side is to balance out the total charge from the product side during the half reaction. The skeleton half reaction would be (Cl2 --> Cl-) so we would have to balance out the reaction by putting the coefficie...
by Matthew_Vargas_2G
Thu Feb 02, 2017 10:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1011245

Re: Post All Chemistry Jokes Here

Image
by Matthew_Vargas_2G
Thu Jan 26, 2017 11:55 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1011245

Re: Post All Chemistry Jokes Here

Image
by Matthew_Vargas_2G
Fri Jan 20, 2017 10:29 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1011245

Re: Post All Chemistry Jokes Here

Image
by Matthew_Vargas_2G
Wed Jan 11, 2017 2:31 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1011245

Re: Post All Chemistry Jokes Here

Q: What is the name of 007's Eskimo cousin?
A: Polar Bond.
by Matthew_Vargas_2G
Mon Nov 14, 2016 2:32 pm
Forum: Naming
Topic: Prefixes in Naming Order [ENDORSED]
Replies: 2
Views: 284

Re: Prefixes in Naming Order [ENDORSED]

Prefixes do not take precedence in naming order for ligands. The ligand names should be in alphabetical order and the prefixes are used according to the number of that specific ligand.
by Matthew_Vargas_2G
Wed Nov 09, 2016 2:37 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Difference between Q and K? [ENDORSED]
Replies: 1
Views: 260

Difference between Q and K? [ENDORSED]

What makes Q different from K? I know that Q is the reaction quotient and K is the equilibrium constant, but what situation would need to provide Q over K or maybe K over Q?
by Matthew_Vargas_2G
Fri Nov 04, 2016 1:31 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Valence Electron Configuration
Replies: 1
Views: 251

Valence Electron Configuration

How do you know how to write out the valence electron configuration just based on the molecule. For example 02 from the course reader on page 109. I'm not exactly sure how they know how to write it out.
by Matthew_Vargas_2G
Thu Oct 27, 2016 6:51 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Character [ENDORSED]
Replies: 2
Views: 1024

Re: Ionic Character [ENDORSED]

For each pair, determine which compound has bonds with greater ionic character. a) PH₃ or NH₃; b) SO₂ or NO₂; c) SF₆ or IF₅. In this case, since each one shares a similar set of atoms (i.e. H3 and 02 and F6) you would look at the placement of the other atom on the periodic table. The larger the size...
by Matthew_Vargas_2G
Sat Oct 22, 2016 11:51 am
Forum: Lewis Structures
Topic: When are you supposed to know?
Replies: 1
Views: 286

When are you supposed to know?

When are you supposed to know when to draw a lewis structure like K+[Cl]- as opposed to one with bonds?
by Matthew_Vargas_2G
Sat Oct 15, 2016 12:22 pm
Forum: General Science Questions
Topic: # of Molecules
Replies: 3
Views: 579

Re: # of Molecules

Yes, you would use avogadro's number in order to find it. So say you had the molecular formula C4H6, you would use the 4 mols of carbon x 6.022x10^23 molecules/mol which would give you the number of molecules.
by Matthew_Vargas_2G
Fri Oct 07, 2016 11:33 pm
Forum: Properties of Electrons
Topic: Kinetic Energy of Electrons to moles? [ENDORSED]
Replies: 1
Views: 371

Kinetic Energy of Electrons to moles? [ENDORSED]

How do you find the kinetic energy per mole of electron? I know you use avogadro's number but I'm not entirely sure how to do it properly with units.
by Matthew_Vargas_2G
Fri Sep 30, 2016 4:37 pm
Forum: Photoelectric Effect
Topic: Minor Rounding Detail Question
Replies: 4
Views: 506

Re: Minor Rounding Detail Question

I think this is more of a personal choice. Many periodic tables have different molar masses but regardless of what number you choose, if your calculations are accurate the end result is similar with a margin of error. I'd personally use 3.00*10^8 because it would make calculations easier, but there ...

Go to advanced search