Search found 23 matches

by Sarahi Cota-Felix 1C
Tue Aug 01, 2017 10:29 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Formulas
Replies: 1
Views: 255

Formulas

Does anyone know if the formulas, such as pH+pOH= 14.00, Ka x Kb= Kw= 10^-14 and so on, will be provided?
by Sarahi Cota-Felix 1C
Tue Aug 01, 2017 9:38 pm
Forum: Lewis Acids & Bases
Topic: Ka
Replies: 2
Views: 266

Re: Ka

Oh okay, thank you! Also, do you know if we will be given the common bases and acids chart?
by Sarahi Cota-Felix 1C
Mon Jul 31, 2017 10:57 pm
Forum: Lewis Acids & Bases
Topic: Ka
Replies: 2
Views: 266

Ka

I am having difficulty understanding where we obtain Ka, when all we are given is the pH. Dr. Lavelle did an example during his review and we were able to figure out what Ka was because Kb was given, so we divided that by Kw (10^-14). But, there are problems that don't give you Kb.
by Sarahi Cota-Felix 1C
Sun Jul 30, 2017 4:31 pm
Forum: Bronsted Acids & Bases
Topic: Tips on studying
Replies: 3
Views: 321

Tips on studying

What are some helpful tips when it comes to memorizing; I always have troubles because I also want to understand the material.
by Sarahi Cota-Felix 1C
Sun Jul 30, 2017 4:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1017837

Re: Post All Chemistry Jokes Here

LOL
by Sarahi Cota-Felix 1C
Sun Jul 30, 2017 4:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1017837

Re: Post All Chemistry Jokes Here

I say yes!
by Sarahi Cota-Felix 1C
Sun Jul 30, 2017 4:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1017837

Re: Post All Chemistry Jokes Here

Hahaha
by Sarahi Cota-Felix 1C
Mon Jul 24, 2017 7:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Self Test 2
Replies: 2
Views: 377

Self Test 2

Where could I check if my answers for the second self test are correct?
by Sarahi Cota-Felix 1C
Sat Jul 22, 2017 5:03 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Naming compounds
Replies: 2
Views: 345

Naming compounds

Are we suppose to know how to give the chemical formula of given compounds?
by Sarahi Cota-Felix 1C
Tue Jul 18, 2017 10:24 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Valence Bond Theory
Replies: 2
Views: 318

Valence Bond Theory

I am still a little confused on how we can obtain the hybridization by looking at the Lewis structure; could someone please help me understand it better?
by Sarahi Cota-Felix 1C
Tue Jul 18, 2017 10:19 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shape
Replies: 1
Views: 209

Molecular Shape

When drawing the Lewis structure to determine the shape, do we have to write out the bond angles as well?
by Sarahi Cota-Felix 1C
Tue Jul 18, 2017 10:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1017837

Re: Post All Chemistry Jokes Here

Posted a chem joke on another section because I barely found this section. Sorry for the misplaced chem joke.
by Sarahi Cota-Felix 1C
Tue Jul 18, 2017 10:07 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Chem Joke
Replies: 1
Views: 261

Chem Joke

Sorry for the bad Chem joke.
by Sarahi Cota-Felix 1C
Tue Jul 11, 2017 11:54 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configurations
Replies: 4
Views: 351

Electron Configurations

What is the main difference between a ground state or an excited state? Thank you.
by Sarahi Cota-Felix 1C
Sun Jul 09, 2017 3:39 pm
Forum: Limiting Reactant Calculations
Topic: Test 1
Replies: 4
Views: 559

Test 1

Will the test 1 be passed back after class on Monday, or when can we get our results? Thank you.
by Sarahi Cota-Felix 1C
Thu Jul 06, 2017 1:03 am
Forum: Student Social/Study Group
Topic: Self Test 1 Answers
Replies: 8
Views: 809

Re: Self Test 1 Answers

Yes, your work is correct up to your mol ratio at the end. I do not know where .2 C and .2 O come from. Your ratio should be C: 1 H: 4 O:1 giving you the final answer of CH4O.
by Sarahi Cota-Felix 1C
Tue Jul 04, 2017 4:03 pm
Forum: Properties of Light
Topic: Self Test 1
Replies: 1
Views: 174

Self Test 1

Where can I check if my work and answers are correct for the Self Test 1 in the course reader?
by Sarahi Cota-Felix 1C
Tue Jul 04, 2017 3:17 pm
Forum: Limiting Reactant Calculations
Topic: Avogadros Number
Replies: 6
Views: 960

Avogadros Number

As I was working on some of the practice problems in the textbook, Avogadro number came out and I am not sure if we will need it for this upcoming test, if so can someone please explain its concept because it confused me.
by Sarahi Cota-Felix 1C
Sun Jul 02, 2017 10:50 am
Forum: Administrative Questions and Class Announcements
Topic: Quantum Question
Replies: 2
Views: 324

Re: Quantum Question

I am also confused as to why the change in energy of the electron went from negative to positive.
I was thinking because you can never have negative frequencies or wavelengths, but I am not sure.
by Sarahi Cota-Felix 1C
Sun Jul 02, 2017 10:46 am
Forum: DeBroglie Equation
Topic: Textbook Vs the Exams
Replies: 1
Views: 302

Re: Textbook Vs the Exams

No, for the most part Doctor Lavelle will provide the equations we need. However, what you do need to know is how to use and combine them. For instance, the equations: E=hv and c=λv gives E= hc/λ. Side note: v= frequency not volume. If you have bought the course reader for this class look on page 44...
by Sarahi Cota-Felix 1C
Sun Jul 02, 2017 10:36 am
Forum: Properties of Light
Topic: Lecture on Friday 06/30/2017
Replies: 1
Views: 194

Lecture on Friday 06/30/2017

As I was reviewing my notes from Friday's lecture, I came across something I still need further clarification on. My question in, as an electron gets closer to the nucleus does it start to lose energy?
by Sarahi Cota-Felix 1C
Sun Jul 02, 2017 10:28 am
Forum: Limiting Reactant Calculations
Topic: limiting reactant question [ENDORSED]
Replies: 6
Views: 798

Re: limiting reactant question [ENDORSED]

Ohhhh, so the limiting reactant does not mean the number that is the least in amount rather the number that controls how much will be made?
by Sarahi Cota-Felix 1C
Sun Jul 02, 2017 10:19 am
Forum: SI Units, Unit Conversions
Topic: Sig Figs [ENDORSED]
Replies: 16
Views: 1887

Re: Sig Figs [ENDORSED]

When using the mass of an element to solve for a problem would it be best to use the complete mass given in the periodic table or round? For instance, (N) has a mass of 14.007, would my final answer be thrown off if I were to round and use 14.01?

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