Search found 20 matches

by CarinaVargas1J
Sun Jun 03, 2018 11:41 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Helpful Chart
Replies: 18
Views: 421

Re: Helpful Chart

Thank you for sharing it with us. It is helpful. (:
by CarinaVargas1J
Sun Jun 03, 2018 11:36 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 824042

Re: Post All Chemistry Jokes Here

Want to hear a joke about Sodium Hypobromite?

NaBro
by CarinaVargas1J
Sun Jun 03, 2018 11:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 824042

Re: Post All Chemistry Jokes Here

If a king farts

IS that a noble gas?
by CarinaVargas1J
Sun Jun 03, 2018 11:09 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: homework problem 4.17 [ENDORSED]
Replies: 4
Views: 177

Re: homework problem 4.17 [ENDORSED]

Well since both shapes are linear, they have bond angles of 180 degrees.
by CarinaVargas1J
Sun May 20, 2018 11:29 pm
Forum: Lewis Structures
Topic: Lone pair electrons
Replies: 5
Views: 141

Re: Lone pair electrons

I agree with the others. It is better to draw the dots for lone pairs and a line for bonds.
by CarinaVargas1J
Sun May 20, 2018 11:23 pm
Forum: Ionic & Covalent Bonds
Topic: Formal charge?
Replies: 12
Views: 387

Re: Formal charge?

Formal Charge= # of valence electrons on atom- lone pair electrons + # of bonds
by CarinaVargas1J
Sun May 20, 2018 10:40 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Oxidation numbers
Replies: 4
Views: 184

Re: Oxidation numbers

Element by itself = 0 Monatomic Ion = ion charge Group 1A = always +1 Group 2A = always +2 Halogens= usually -1, positive with oxygen Hydrogen= +1 with nonmetals -1 with metals Oxygen= usually -2, -1 with peroxide ((H2O2) Fluoride = always -1 * I recommend you to watch Tyler DeWitt in Youtube if yo...
by CarinaVargas1J
Sun May 13, 2018 9:17 pm
Forum: Lewis Structures
Topic: Most Important Lewis Structure
Replies: 4
Views: 115

Re: Most Important Lewis Structure

Yes, it is indeed asking for the most stable Lewis structure with a formal charge of zero (or in some cases, the closest to zero).
by CarinaVargas1J
Sun May 13, 2018 9:12 pm
Forum: Ionic & Covalent Bonds
Topic: cation vs anion
Replies: 14
Views: 363

Re: cation vs anion

Cations are positive, which means the atom lost electrons.

Anions are negative, which means the atom gained electrons.
by CarinaVargas1J
Sun May 13, 2018 8:59 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charge purpose
Replies: 33
Views: 1055

Re: Formal charge purpose

Calculating the formal charge is important because if it adds up to 0, then the Lewis structure is the most stable.
by CarinaVargas1J
Sun May 06, 2018 11:10 pm
Forum: Ionic & Covalent Bonds
Topic: Midterm Topics [ENDORSED]
Replies: 33
Views: 1677

Re: Midterm Topics [ENDORSED]

On Friday's lecture, Professor Lavelle said that there will be only questions from chapter 1 and 2.
by CarinaVargas1J
Sun May 06, 2018 11:05 pm
Forum: Administrative Questions and Class Announcements
Topic: Friday's Review Session
Replies: 1
Views: 114

Friday's Review Session

Did anyone attend the 3:00-3:50 review session on Friday? If so, can anyone tell me exactly what they went over? Or if you can send pictures, that would be even better. Thanks in advance (:
by CarinaVargas1J
Sun Apr 29, 2018 11:03 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Difference between a shell, subshell, and orbital
Replies: 4
Views: 154

Re: Difference between a shell, subshell, and orbital

All electrons that have the same value for n (the principle quantum number) are in the same shell Within a shell (same n), all electrons that share the same l (the angular momentum quantum number, or orbital shape) are in the same sub-shell When electrons share the same n, l, and ml, we say they are...
by CarinaVargas1J
Sun Apr 29, 2018 10:53 pm
Forum: SI Units, Unit Conversions
Topic: What is the notation for molar mass?
Replies: 15
Views: 498

Re: What is the notation for molar mass?

Molar mass is expressed as M and the units are g/mol
by CarinaVargas1J
Sun Apr 29, 2018 10:50 pm
Forum: Limiting Reactant Calculations
Topic: Reactant vs. Reagent [ENDORSED]
Replies: 23
Views: 6350

Re: Reactant vs. Reagent [ENDORSED]

Reactant and reagent are often used interchangeably—however, a reactant is more specifically a substance consumed in the course of a chemical reaction.
by CarinaVargas1J
Sun Apr 15, 2018 11:46 pm
Forum: Balancing Chemical Reactions
Topic: Subscripts [ENDORSED]
Replies: 6
Views: 262

Re: Subscripts [ENDORSED]

It will become Mg(N6). Then you are able to balance the rest of the equation.
by CarinaVargas1J
Sun Apr 15, 2018 11:35 pm
Forum: Significant Figures
Topic: Sig Figs [ENDORSED]
Replies: 9
Views: 388

Re: Sig Figs [ENDORSED]

I think significant figures don't matter too much as long as you have the correct answer. And if it does for tests, they will not deduct too many points.
by CarinaVargas1J
Sun Apr 15, 2018 11:27 pm
Forum: Balancing Chemical Reactions
Topic: Balancing the Equation
Replies: 9
Views: 337

Re: Balancing the Equation

I personally like to write the total number of each atom on both the reactant and product side on the bottom of the given equation so it can be easier for me to visualize it better. Then, I use the guess and check method & use coefficients that will make the equation balanced.
by CarinaVargas1J
Sun Apr 15, 2018 10:48 pm
Forum: Administrative Questions and Class Announcements
Topic: Memorizing equations [ENDORSED]
Replies: 5
Views: 200

Re: Memorizing equations [ENDORSED]

I also believe the cover sheet that was on our first test will be the formulas provided to us for the next tests we will take.
by CarinaVargas1J
Sun Apr 15, 2018 10:33 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 113
Views: 35870

Re: Rusty on High School Chem [ENDORSED]

I am going to start going to step-up/workshops this upcoming week. For those who have already gone, how have you guys liked it?

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