Search found 23 matches
- Tue Aug 01, 2017 10:29 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Formulas
- Replies: 1
- Views: 447
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?
- Tue Aug 01, 2017 9:38 pm
- Forum: Lewis Acids & Bases
- Topic: Ka
- Replies: 2
- Views: 554
Re: Ka
Oh okay, thank you! Also, do you know if we will be given the common bases and acids chart?
- Mon Jul 31, 2017 10:57 pm
- Forum: Lewis Acids & Bases
- Topic: Ka
- Replies: 2
- Views: 554
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.
- Sun Jul 30, 2017 4:31 pm
- Forum: Bronsted Acids & Bases
- Topic: Tips on studying
- Replies: 3
- Views: 592
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.
- Sun Jul 30, 2017 4:27 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3707544
- Sun Jul 30, 2017 4:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3707544
Re: Post All Chemistry Jokes Here
I say yes!
- Sun Jul 30, 2017 4:20 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3707544
- Mon Jul 24, 2017 7:01 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Self Test 2
- Replies: 2
- Views: 590
Self Test 2
Where could I check if my answers for the second self test are correct?
- Sat Jul 22, 2017 5:03 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Naming compounds
- Replies: 2
- Views: 633
Naming compounds
Are we suppose to know how to give the chemical formula of given compounds?
- Tue Jul 18, 2017 10:24 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Valence Bond Theory
- Replies: 2
- Views: 560
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?
- Tue Jul 18, 2017 10:19 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape
- Replies: 1
- Views: 378
Molecular Shape
When drawing the Lewis structure to determine the shape, do we have to write out the bond angles as well?
- Tue Jul 18, 2017 10:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3707544
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.
- Tue Jul 18, 2017 10:07 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Chem Joke
- Replies: 1
- Views: 452
Chem Joke
Sorry for the bad Chem joke.
- Tue Jul 11, 2017 11:54 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configurations
- Replies: 4
- Views: 772
Electron Configurations
What is the main difference between a ground state or an excited state? Thank you.
- Sun Jul 09, 2017 3:39 pm
- Forum: Limiting Reactant Calculations
- Topic: Test 1
- Replies: 4
- Views: 942
Test 1
Will the test 1 be passed back after class on Monday, or when can we get our results? Thank you.
- Thu Jul 06, 2017 1:03 am
- Forum: Student Social/Study Group
- Topic: Self Test 1 Answers
- Replies: 8
- Views: 1586
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.
- Tue Jul 04, 2017 4:03 pm
- Forum: Properties of Light
- Topic: Self Test 1
- Replies: 1
- Views: 333
Self Test 1
Where can I check if my work and answers are correct for the Self Test 1 in the course reader?
- Tue Jul 04, 2017 3:17 pm
- Forum: Limiting Reactant Calculations
- Topic: Avogadros Number
- Replies: 6
- Views: 1780
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.
- Sun Jul 02, 2017 10:50 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quantum Question
- Replies: 2
- Views: 588
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.
I was thinking because you can never have negative frequencies or wavelengths, but I am not sure.
- Sun Jul 02, 2017 10:46 am
- Forum: DeBroglie Equation
- Topic: Textbook Vs the Exams
- Replies: 1
- Views: 498
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...
- Sun Jul 02, 2017 10:36 am
- Forum: Properties of Light
- Topic: Lecture on Friday 06/30/2017
- Replies: 1
- Views: 376
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?
- Sun Jul 02, 2017 10:28 am
- Forum: Limiting Reactant Calculations
- Topic: limiting reactant question [ENDORSED]
- Replies: 6
- Views: 1926
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?
- Sun Jul 02, 2017 10:19 am
- Forum: SI Units, Unit Conversions
- Topic: Sig Figs [ENDORSED]
- Replies: 16
- Views: 3283
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?