Search found 22 matches
- Sun Jun 03, 2018 10:05 pm
- Forum: Sigma & Pi Bonds
- Topic: sigma and Pi bonds
- Replies: 2
- Views: 466
sigma and Pi bonds
I'm still a bit confused about these two. Can some give a quick sentence in the major difference of the two? Thanks in advanced.
- Sun Jun 03, 2018 10:01 pm
- Forum: Biological Examples
- Topic: Hemoglobin Structure
- Replies: 3
- Views: 498
Hemoglobin Structure
In class we just went over that 4 proteins form together to form hemoglobin, do we need to know how the 4 protein form together?
- Sun Jun 03, 2018 9:29 pm
- Forum: Hybridization
- Topic: Lone Pairs
- Replies: 5
- Views: 584
Lone Pairs
I know that when we have lone pairs the 3-D shape changes, however does Hybridization change as well due to have lone pairs instead of bonds?
- Tue May 22, 2018 7:03 pm
- Forum: Lewis Structures
- Topic: Chemical Formulas (test 3)
- Replies: 2
- Views: 367
Chemical Formulas (test 3)
For the test, do we need to know how to translate the names of chemical formulas. Or will the chemical formulas be given?
Ex. Magnesium Arsenide is As2Mg3, or will As2Mg3 be given
Ex. Magnesium Arsenide is As2Mg3, or will As2Mg3 be given
- Sun May 20, 2018 10:02 pm
- Forum: Significant Figures
- Topic: Sig Figs
- Replies: 3
- Views: 557
Re: Sig Figs
I use one rule the lowest amount of sig figs giving to me on the question is the sig figs I use to modify my final answer.
- Sun May 20, 2018 9:49 pm
- Forum: Bond Lengths & Energies
- Topic: Test 3
- Replies: 8
- Views: 791
Re: Test 3
I think its everything covered up to this friday and chapter 3.
- Sun May 20, 2018 9:45 pm
- Forum: Electronegativity
- Topic: Isoelectronic atoms and their relative electronegativities
- Replies: 2
- Views: 620
Re: Isoelectronic atoms and their relative electronegativities
If im reading your question right, then i believe that their electronegativities are subject to change if they lose or gain an e. if they gain an e, it's easy for them to lose and if they lose an e than they are more likely to gain an e. Therefore their electronegativities change
- Sun May 13, 2018 8:24 pm
- Forum: Lewis Structures
- Topic: Cations and Anions
- Replies: 3
- Views: 659
Cations and Anions
In Lewis structure is it possible to show an element or molecule with the loss or gain of an electron?
- Sun May 13, 2018 8:19 pm
- Forum: Electronegativity
- Topic: Helium
- Replies: 2
- Views: 1120
Helium
Does helium follow the electronegative trend of the periodic table or is it an exception to rule becuase of how the table of elements is set up?
- Sun May 13, 2018 8:17 pm
- Forum: Lewis Structures
- Topic: Valence shell on Noble gases
- Replies: 4
- Views: 588
Valence shell on Noble gases
When looking at the noble gases, is it possible for them to gain anymore electrons even if their outermost shell is full? If so can they complete a new shell?
- Sun May 06, 2018 9:52 pm
- Forum: Trends in The Periodic Table
- Topic: electronegativity
- Replies: 4
- Views: 554
Re: electronegativity
The way that i remember this the easiest is by having electronegativity being at its lowest on the bottom left and the highest at the top right of the periodic table.
- Sun May 06, 2018 9:41 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Shapes of orbitals
- Replies: 6
- Views: 735
Re: Shapes of orbitals
I dont think that we need to know it, but i think it will be useful to understand the concept behind the orbitals for the midterm.
- Sun May 06, 2018 9:37 pm
- Forum: Photoelectric Effect
- Topic: Intensity of Photon
- Replies: 8
- Views: 968
Re: Intensity of Photon
It is the amount of photons emitted in the experiment and it can be useful to know the work function or the Excess Energy emitted!
- Sun Apr 22, 2018 11:24 pm
- Forum: Photoelectric Effect
- Topic: Work Function
- Replies: 4
- Views: 996
Re: Work Function
Work function can be given in Joules or as eV, however from the information given in the question we can find the work function. Work function is just the amount energy required to separate an electron from the metal.
- Sun Apr 22, 2018 11:21 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Balmer and Lyman Series
- Replies: 9
- Views: 1460
Re: Balmer and Lyman Series
I think that we need to know the values that correspond to the Atomic spectrum so that we can Identify how different wavelengths result in different position on the spectrum like the series that you mention your question. So I think that we do need to memorize it.
- Tue Apr 17, 2018 11:18 am
- Forum: Photoelectric Effect
- Topic: Converting eV to J
- Replies: 4
- Views: 854
Converting eV to J
In chapter 1 question 69, we are given the work function in eV, how do I convert that to Joules.
- Sun Apr 15, 2018 10:38 pm
- Forum: Photoelectric Effect
- Topic: e- returning to metal
- Replies: 2
- Views: 280
e- returning to metal
When the electrons are returning to metal, do the e- release a photon, or is it another form of energy?
- Sun Apr 15, 2018 10:33 pm
- Forum: Empirical & Molecular Formulas
- Topic: Rounding atomic weight (general question) [ENDORSED]
- Replies: 8
- Views: 1025
Re: Rounding atomic weight (general question) [ENDORSED]
I think that best thing to do is to just follow the periodic table, that way you can't be wrong. Also it save time while performing in the exams.
- Sun Apr 15, 2018 10:29 pm
- Forum: Limiting Reactant Calculations
- Topic: Limiting Reactants
- Replies: 5
- Views: 549
Re: Limiting Reactants
I believe that you multiply by the ratio, so your assumption is right.
- Sun Apr 15, 2018 10:26 pm
- Forum: Properties of Light
- Topic: Equations [ENDORSED]
- Replies: 8
- Views: 692
Re: Equations [ENDORSED]
Actually both can be used at the same time, the main thing is understand what each variable means, after understanding that you'll be able to see the relationships that are crossed over from both equations. The combination of the two depending on what is given in the question, can lead to the findin...
- Sun Apr 15, 2018 10:22 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing equations with fractions [ENDORSED]
- Replies: 13
- Views: 1572
Re: Balancing equations with fractions [ENDORSED]
You could leave it like that, however it would just make your life more difficult going forward, that best thing would be for there to be whole numbers.
- Sun Apr 15, 2018 10:17 pm
- Forum: SI Units, Unit Conversions
- Topic: moles to atoms [ENDORSED]
- Replies: 3
- Views: 556
Re: moles to atoms [ENDORSED]
to convert you would need to multiply by Avogadro's number, because as you multiply you will cancel "mol" and be left with number of atoms for that mol.