Search found 40 matches

by Aedra Li 3H
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
by Aedra Li 3H
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?
by Aedra Li 3H
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.
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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
by Aedra Li 3H
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?
by Aedra Li 3H
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
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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?
by Aedra Li 3H
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 ?
by Aedra Li 3H
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...
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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 ...
by Aedra Li 3H
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?
by Aedra Li 3H
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.
by Aedra Li 3H
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?
by Aedra Li 3H
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.

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