Search found 31 matches
- Sat Dec 08, 2018 10:53 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionic and covalent bonds
- Replies: 5
- Views: 682
Re: ionic and covalent bonds
Yup! Both highest at fluorine
- Sat Dec 08, 2018 12:38 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Shape
- Replies: 5
- Views: 581
Re: Shape
Yeah I'm pretty sure Lavelle said that he would always be asking for molecular geometry
- Sat Dec 08, 2018 12:36 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR
- Replies: 4
- Views: 558
Re: VSEPR
Yeah! The shape is linear with bond angles 180 degrees
- Sat Dec 08, 2018 12:33 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Determining electrons
- Replies: 3
- Views: 575
Re: Determining electrons
You look at the number of orbitals in a given subshell and then multiply it by 2 since there are 2 electrons in each orbital
(so if l=2, there are 5 orbitals, meaning 10 electrons)
(so if l=2, there are 5 orbitals, meaning 10 electrons)
- Sat Dec 08, 2018 12:26 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Help with problem
- Replies: 1
- Views: 521
Re: Help with problem
Since you are given diameter (2x10^-4 m) and you are trying to find velocity, you just have to figure out what the mass of oxygen is since it's asking for uncertainty of velocity of the oxygen molecule. Since oxygen is diatomic, it's O2, so when you find the mass it would be 32 g/mol x 1/6.022x10^23...
- Sat Dec 08, 2018 12:18 pm
- Forum: Octet Exceptions
- Topic: expanded octet bonding
- Replies: 1
- Views: 391
expanded octet bonding
For expanded octets, how do you know the maximum number of bonds they can form?
- Sat Dec 08, 2018 12:06 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH vs. pOH
- Replies: 2
- Views: 341
pH vs. pOH
If you're given the value for pH, to find pOH is it literally just 14 minus the pH?
- Sat Dec 08, 2018 12:04 pm
- Forum: Trends in The Periodic Table
- Topic: effective nuclear charge
- Replies: 2
- Views: 621
effective nuclear charge
I'm still kind of confused on what exactly effective nuclear charge is as well as what its trend is in the periodic table?
- Sat Dec 08, 2018 12:02 pm
- Forum: Empirical & Molecular Formulas
- Topic: combustion analysis?
- Replies: 2
- Views: 540
combustion analysis?
What exactly are the "general" steps that you would take if you were calculating a combustion analysis problem?
- Sat Dec 08, 2018 12:00 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis acids and bases vs. Bronsten
- Replies: 2
- Views: 250
Lewis acids and bases vs. Bronsten
I was wondering what exactly the differences/similarities are between Lewis acids and bases and Bronsten acids and bases?
- Sat Dec 08, 2018 11:56 am
- Forum: Naming
- Topic: memorizing complexes?
- Replies: 2
- Views: 274
memorizing complexes?
Are we supposed to know off the top of our heads what complexes like (en) and (ox) are?
- Sat Dec 08, 2018 11:54 am
- Forum: Sigma & Pi Bonds
- Topic: Test 3 Q3D
- Replies: 4
- Views: 691
Test 3 Q3D
In 3d it asked you to draw a picture showing how a pi bond would be formed from two p orbitals but I had no idea how you're supposed to draw that??
- Sat Dec 08, 2018 11:52 am
- Forum: Photoelectric Effect
- Topic: Test 2 Q2c
- Replies: 2
- Views: 758
Test 2 Q2c
How do you calculate the wavelength of the ejected electron? It's given that the chromium metal is irradiated with light (wavelength 3.45x10^-11 m) and the kinetic energy is 2x10^-19 J and in part a it was found that the work function is 5.76 x 10^-15 J, but how do you find the wavelength of the eje...
- Sat Dec 08, 2018 11:49 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Test 3
- Replies: 1
- Views: 487
Test 3
On my third test in this class one of the questions was to order the anions I-, Cl-, S2-, and P3- from least to most polarizable. I was wondering why Cl- is the least polarizable even though it has a -1 charge?
- Sat Dec 08, 2018 11:48 am
- Forum: Significant Figures
- Topic: when to round?
- Replies: 2
- Views: 556
when to round?
Are we only supposed to look at the sigfigs given for values in the question? Do we have to account for sigfigs in the constants that are given?
- Sat Dec 08, 2018 11:46 am
- Forum: Properties of Light
- Topic: HW 1.55A
- Replies: 2
- Views: 549
HW 1.55A
I'm confused as to where to start with this question because the units are given as 1/cm? Would I just do unit conversions to convert it to m and then solve it as usual?
- Sat Dec 08, 2018 11:36 am
- Forum: Naming
- Topic: polydentate complexes?
- Replies: 2
- Views: 429
polydentate complexes?
I'm super confused on how to figure out if a polydentate is monodentate, bidentate, etc. based on Lewis structure?
- Fri Nov 09, 2018 10:21 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: ionic vs. covalent character
- Replies: 3
- Views: 409
ionic vs. covalent character
I was wondering what the difference between a molecule with high ionic character vs. high covalent character was?
- Tue Oct 30, 2018 3:31 pm
- Forum: Lewis Structures
- Topic: kekule structure?
- Replies: 3
- Views: 299
kekule structure?
The book mentioned something about a Kekule structure but I didn't really understand what that was/the significance of it. Could someone explain it to me?
- Tue Oct 30, 2018 3:24 pm
- Forum: Octet Exceptions
- Topic: octet rule exceptions?
- Replies: 5
- Views: 797
octet rule exceptions?
I'm confused, are all the atoms outside of the period 2 ones able to have an expanded octet?
- Sun Oct 28, 2018 1:30 pm
- Forum: Lewis Structures
- Topic: Lewis Dot Order
- Replies: 10
- Views: 1264
Re: Lewis Dot Order
Nope! just make sure that there's one dot on all 4 sides before you can start pairing them together
- Sun Oct 28, 2018 1:27 pm
- Forum: Lewis Structures
- Topic: Polyatomic Ions
- Replies: 3
- Views: 235
Re: Polyatomic Ions
I think you don't have to, but I also think that as we go along and do more problems that use common elements like that you'll start to memorize their charges anyways
- Sun Oct 28, 2018 1:23 pm
- Forum: Octet Exceptions
- Topic: Octet Exceptions
- Replies: 3
- Views: 349
Re: Octet Exceptions
Just to add on to that, they follow the duplet rule as opposed to the octet rule!
- Sun Oct 28, 2018 1:20 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionic vs. covalent bonds
- Replies: 3
- Views: 373
ionic vs. covalent bonds
In general are ionic bonds much stronger than covalent bonds?
- Sun Oct 28, 2018 1:19 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionization energy
- Replies: 7
- Views: 834
Re: ionization energy
Removing the first electron is easier since the pull isn't as strong but the second one is always harder since there is a pull on the electrons that are left so it's harder for them to be removed
- Fri Oct 12, 2018 11:01 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: spherical polar coordinates
- Replies: 1
- Views: 151
Re: spherical polar coordinates
r is the distance from nucleus, theta is the angle from the positive z-axis (the "north pole", kind of like latitude), and phi is the angle about the z-axis (like longitude)
- Fri Oct 12, 2018 10:59 pm
- Forum: DeBroglie Equation
- Topic: explain debroglie equation?
- Replies: 3
- Views: 232
explain debroglie equation?
I don't think I really understand the de Broglie equation at all and how it relates to what exactly we're learning, could someone explain it to me?
- Fri Oct 12, 2018 10:54 pm
- Forum: *Black Body Radiation
- Topic: What is a black body? [ENDORSED]
- Replies: 7
- Views: 1504
Re: What is a black body? [ENDORSED]
For a black body, as the temperature increases the max intensity of radiation produces shorter wavelengths as well
- Thu Oct 04, 2018 4:40 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: diatomic molecules
- Replies: 5
- Views: 398
diatomic molecules
Is there any helpful way to memorize the diatomic molecules?
- Thu Oct 04, 2018 4:36 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: V=n/c
- Replies: 7
- Views: 9248
Re: V=n/c
I'm not sure if "m" is used for molarity, but I think M refers to molarity (molar concentration), and "m" is used to denote the units for meters and I guess "m" can also be used to symbolize mass??
- Thu Oct 04, 2018 4:12 pm
- Forum: SI Units, Unit Conversions
- Topic: Homework Questions [ENDORSED]
- Replies: 14
- Views: 1273
Re: Homework Questions [ENDORSED]
I think you can do any 7 you want but it's probably better to do most of the ones he lists for practice for the test