Search found 40 matches
- Sat Dec 07, 2019 10:45 pm
- Forum: Resonance Structures
- Topic: when there is resonance
- Replies: 5
- Views: 171
Re: when there is resonance
There must be two bonds that are different for there to be resonance
- Sat Dec 07, 2019 4:56 am
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Strong Acids
- Replies: 2
- Views: 103
Strong Acids
When determining the strength of an acid, which is more important to consider: bond length or electronegativity?
- Thu Dec 05, 2019 5:51 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape vs. Molecular Geometry
- Replies: 4
- Views: 90
Re: Molecular Shape vs. Molecular Geometry
Shape takes into consideration the electron repulsion that a lone pair would cause.
- Thu Dec 05, 2019 5:46 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Subshell Notation
- Replies: 2
- Views: 132
Re: Subshell Notation
Considering an atom's VSEPR model is also helpful when determining a hybridization scheme.
- Thu Dec 05, 2019 5:38 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Bonding Sites
- Replies: 1
- Views: 57
Bonding Sites
Why cannot there be more than 6 bonding sites?
- Thu Dec 05, 2019 5:36 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: -ate
- Replies: 11
- Views: 253
Re: -ate
-ate is required when there is a negative charge
- Thu Dec 05, 2019 5:35 pm
- Forum: Naming
- Topic: Old vs New
- Replies: 2
- Views: 44
Old vs New
Does it matter whether or not we use the old names over the new names for the ligands? How significant is the difference?
- Wed Dec 04, 2019 9:03 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis and Bronsted
- Replies: 3
- Views: 39
Lewis and Bronsted
What is the difference between Lewis acids and bases and Bronsted acids and bases?
- Tue Dec 03, 2019 11:25 pm
- Forum: Lewis Acids & Bases
- Topic: 6A.13
- Replies: 5
- Views: 57
6A.13
Why is Ag+ a Lewis acid?
- Tue Dec 03, 2019 9:06 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Memorization
- Replies: 15
- Views: 243
Re: Memorization
I think we also need to know the hybridization of the central atom that's associated with each shape.
- Sun Nov 24, 2019 9:36 pm
- Forum: Sigma & Pi Bonds
- Topic: Molecular Shape
- Replies: 11
- Views: 126
Molecular Shape
Do sigma and pi bonds influence a molecule's shape, if so how?
- Sun Nov 24, 2019 6:23 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: H3O+
- Replies: 11
- Views: 6252
Re: H3O+
I believe the bond angles would be less than 109.5
- Sun Nov 24, 2019 6:19 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Radicals and Molecular Shape
- Replies: 2
- Views: 38
Radicals and Molecular Shape
Does a radical affect the shape of a molecule the same way a lone pair does?
- Thu Nov 21, 2019 12:25 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent vs linear
- Replies: 56
- Views: 1125
Re: Bent vs linear
AX3E2 would be t shaped
- Fri Nov 15, 2019 9:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent or Angular
- Replies: 13
- Views: 293
Bent or Angular
Does it matter whether we label a molecule as either bent or angular, as they are the same thing?
- Wed Nov 13, 2019 11:20 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: 2E9
- Replies: 3
- Views: 45
2E9
Problem 2E9 asks to determine the shape of an ICl3 molecule. When I drew the Lewis Structure, I had 3 bonding pairs and 2 lone pairs so I assumed the shape would be a trigonal bipyramidal. However, in the solution manual it says that it has a T shape. Why is this the case?
- Tue Nov 12, 2019 8:57 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizing Power
- Replies: 4
- Views: 137
Polarizing Power
How do you determine the polarizing power of a cation?
- Tue Nov 12, 2019 8:55 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge
- Replies: 9
- Views: 260
Formal Charge
Is there a more organized way to write the formal charge? It sometimes gets messy and confusing when I have all these numbers around my Lewis Structure.
- Tue Nov 12, 2019 8:52 pm
- Forum: Lewis Structures
- Topic: Biradical
- Replies: 2
- Views: 38
Biradical
Why do atoms biradicals and do they occur often?
- Tue Nov 12, 2019 8:46 pm
- Forum: Bond Lengths & Energies
- Topic: Homework for week 7
- Replies: 5
- Views: 62
Homework for week 7
What section are we supposed to do our homework in for this week? Are we still allowed to do problems in the chemical bond section?
- Sat Nov 09, 2019 4:31 pm
- Forum: Bond Lengths & Energies
- Topic: Bonds
- Replies: 6
- Views: 74
Bonds
What is the difference between pi bonds and sigma bonds?
- Wed Nov 06, 2019 12:41 am
- Forum: Properties of Light
- Topic: Remembering order of EM radiation
- Replies: 1
- Views: 119
Remembering order of EM radiation
Does anyone have any tips or tricks for memorizing the order of EM radiation?
- Wed Nov 06, 2019 12:39 am
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge
- Replies: 2
- Views: 44
Formal Charge
When drawing Lewis Structures, why is it better to place the negative formal charge on the more electronegative atom?
- Wed Nov 06, 2019 12:29 am
- Forum: Octet Exceptions
- Topic: Limit to expanded octet
- Replies: 7
- Views: 246
Limit to expanded octet
Is there a certain amount of lone pairs or bonds that an expanded octet can have?
- Sat Nov 02, 2019 6:18 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 2A.9
- Replies: 2
- Views: 38
Re: 2A.9
For this problem you have to take into account that an atom loses an electron from the s shell before the d shell, then just look what atom has the same configuration from there if that makes sense.
- Sat Nov 02, 2019 6:10 pm
- Forum: Dipole Moments
- Topic: Midterm
- Replies: 8
- Views: 128
Midterm
Are dipole moments going to be on the midterm?
- Tue Oct 29, 2019 4:09 pm
- Forum: Ionic & Covalent Bonds
- Topic: HW 2A.23
- Replies: 2
- Views: 32
Re: HW 2A.23
Doesn't Al have 3 valence electrons? Why would it gain electrons?
- Sun Oct 27, 2019 5:03 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Determining # for Formal Charge
- Replies: 2
- Views: 45
Determining # for Formal Charge
How did we determine the S value to be 6 in the example we did in lecture?
- Wed Oct 23, 2019 5:01 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configuration
- Replies: 2
- Views: 34
Electron Configuration
Why is it better to add elections with parallel spins in different orbitals than to pair them within the same orbital?
- Sat Oct 19, 2019 3:33 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Lobes
- Replies: 2
- Views: 40
Lobes
Can somebody explain exactly what a lobe is ?
- Tue Oct 15, 2019 12:20 am
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Module Question 29
- Replies: 1
- Views: 34
Module Question 29
The question states that in 1.0 s, a 60 W bulb emits 11 J of energy in the form of infrared radiation with wavelength 1850 nm. It asks for the energy per photon of of light emitted and the amount of photons of infarred radiation generated in 1.0 s. To start do I use the E=h(c/wavelength) equation to...
- Mon Oct 14, 2019 9:46 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Best Way To Study?
- Replies: 56
- Views: 1172
Re: Best Way To Study?
Doing a lot of practice problems in the textbook and doing the post module assessments really helps me get comfortable with the concepts.
- Mon Oct 14, 2019 5:18 pm
- Forum: *Shrodinger Equation
- Topic: Hamiltonian
- Replies: 5
- Views: 80
Hamiltonian
Can somebody explain in depth what a hamiltonian is?
- Mon Oct 14, 2019 5:05 pm
- Forum: DeBroglie Equation
- Topic: Confusing percentage question in DeBrogile question
- Replies: 3
- Views: 67
Re: Confusing percentage question in DeBrogile question
I was also confused by this question, and the solution manual did not list any percentage differences.
- Sat Oct 12, 2019 5:47 pm
- Forum: Photoelectric Effect
- Topic: Mass of Electron
- Replies: 6
- Views: 67
Mass of Electron
What is the mass of an electron? Does it ever vary?
- Sat Oct 12, 2019 5:40 pm
- Forum: Photoelectric Effect
- Topic: How much energy to remove one electron?
- Replies: 8
- Views: 151
Re: How much energy to remove one electron?
Jk what i did was on the right track. Since the work function is the same as the threshold, I converted 150.6 kJ/mol to 1.506x10^5 J/mol. However, since the units are J/mol, I need to divide by Avogadro's constant, (6.022x10^23 electrons/mol) which would cancel out the moles and leave me with just ...
- Fri Oct 11, 2019 6:21 pm
- Forum: Einstein Equation
- Topic: E=hv
- Replies: 8
- Views: 119
E=hv
In the E=hv equation what does the h represent?
- Tue Oct 08, 2019 2:12 pm
- Forum: Balancing Chemical Reactions
- Topic: Module Question 19
- Replies: 3
- Views: 123
Module Question 19
In the balancing chemical equation post assessment you are asked to find the net number of moles of gas produced from the combustion of 4 moles of butane. I know how to balance the equation, but am unsure as to how to determine the number of moles of gas that are produced.
- Fri Oct 04, 2019 3:59 pm
- Forum: Empirical & Molecular Formulas
- Topic: Writing Empirical Formulas
- Replies: 8
- Views: 158
Writing Empirical Formulas
Once you have determined how much of each compound is required for an empirical formula, how do you know what order to write the compounds in when you are rewriting whole empirical formula?
- Tue Oct 01, 2019 7:00 pm
- Forum: SI Units, Unit Conversions
- Topic: Can someone tell me where I can access the Solutions Manual?
- Replies: 6
- Views: 133
Re: Can someone tell me where I can access the Solutions Manual?
When I received my text books in the mail, the solution manual and looseleaf textbook came wrapped together.