Search found 32 matches

by 405098546
Sat Dec 08, 2018 11:21 pm
Forum: Conjugate Acids & Bases
Topic: Acceptor and Donor?
Replies: 3
Views: 230

Re: Acceptor and Donor?

Conjugate acids and bases should be seen as what is left over after an acid and base reaction, not what that they donate or receive protons.
by 405098546
Sat Dec 08, 2018 11:17 pm
Forum: Identifying Acidic & Basic Salts
Topic: Neutralization
Replies: 1
Views: 160

Re: Neutralization

The salt may be an acid that will react with water and produce more hydronium atoms to make a more acidic solution
by 405098546
Sat Dec 08, 2018 11:16 pm
Forum: Properties of Light
Topic: Colors and Frequency
Replies: 14
Views: 523

Re: Colors and Frequency

We just need to know the general wavelengths that are associated with types of waves.
by 405098546
Sat Dec 08, 2018 11:15 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 41
Views: 789

Re: Speed of Light

Speed of light is constant
by 405098546
Sat Dec 08, 2018 11:14 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 12
Views: 603

Re: Final

More focus may be towards the last part of this chapter since we haven't been tested on it yet.
by 405098546
Sat Dec 08, 2018 11:13 pm
Forum: Sigma & Pi Bonds
Topic: Why are sigma bonds stronger than pi bonds?
Replies: 10
Views: 457

Re: Why are sigma bonds stronger than pi bonds?

sigma bonds have more overlap and the pi bonds only make contact side by side
by 405098546
Sat Dec 08, 2018 11:13 pm
Forum: Naming
Topic: cis and trans
Replies: 4
Views: 104

Re: cis and trans

cis means same side and trans means opposite sides
by 405098546
Sat Dec 08, 2018 11:11 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: HOCl vs HOI
Replies: 9
Views: 453

Re: HOCl vs HOI

Cl bonds have more stability due to higher electronegativity.
by 405098546
Mon Dec 03, 2018 2:24 am
Forum: Sigma & Pi Bonds
Topic: Triple bond?
Replies: 18
Views: 465

Re: Triple bond?

There will be one sigma and two pi bonds.
by 405098546
Mon Dec 03, 2018 2:22 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 11
Views: 223

Re: Lone Pairs

It is because lone pairs are areas of high electron density that have effects of repulsion that alter the shape of a molecule.
by 405098546
Mon Dec 03, 2018 2:18 am
Forum: Hybridization
Topic: Double and Triple Bonds
Replies: 17
Views: 270

Re: Double and Triple Bonds

No the type of bond doesn't matter but the number of areas of high electron density do.
by 405098546
Mon Nov 26, 2018 1:42 am
Forum: Lewis Structures
Topic: Expanded Octet
Replies: 8
Views: 197

Re: Expanded Octet

Expanded octet is when an atom can hold more than 8 valence electrons in a lewis structure. So some atoms like sulfur, phosphorous, or chlorine are more prone to expanded octets. This is something you should simply keep in mind.
by 405098546
Mon Nov 26, 2018 1:39 am
Forum: Administrative Questions and Class Announcements
Topic: Test 3
Replies: 10
Views: 281

Re: Test 3

Basically 2d-2f. If you read those three chapters and do the problems you should be prepared.
by 405098546
Mon Nov 26, 2018 1:38 am
Forum: Ionic & Covalent Bonds
Topic: Resonance
Replies: 3
Views: 101

Resonance

Is it possible to determine when a molecule will have resonance? Basically I'm wondering how do you know when there will be multiple lewis structures for one molecule.
by 405098546
Sun Nov 18, 2018 11:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019507

Re: Post All Chemistry Jokes Here

Don't trust atoms, they make up everything
by 405098546
Sun Nov 18, 2018 11:44 pm
Forum: Ionic & Covalent Bonds
Topic: Intra vs Intermolecular forces
Replies: 9
Views: 686

Re: Intra vs Intermolecular forces

Intramolecular forces are way harder to break because entire bonds have to be broken. Intermolecular forces are just breaking weak dipole moments.
by 405098546
Sun Nov 18, 2018 11:42 pm
Forum: Hybridization
Topic: Bond Angles
Replies: 12
Views: 267

Re: Bond Angles

Drawing Lewis structures is very helpful, because it helps you avoid making careless mistakes.
by 405098546
Sun Nov 11, 2018 9:39 pm
Forum: Administrative Questions and Class Announcements
Topic: Class Grading
Replies: 9
Views: 357

Re: Class Grading

On the syllabus it says the class takes the average of the total points out of 500 that students get in the class. Then it gives grades to students accordingly.
by 405098546
Sun Nov 11, 2018 9:33 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge
Replies: 11
Views: 283

Re: Formal Charge

That is not possible because formal charge is based off the specific composition of a molecule. An atom doesn't own or have a specific formal charge.
by 405098546
Sun Nov 11, 2018 9:32 pm
Forum: Electronegativity
Topic: Electron Affinity
Replies: 3
Views: 117

Re: Electron Affinity

Yes, since the K ion has a full valence shell it will require or release much more energy when an electron is added or taken away.
by 405098546
Sun Oct 28, 2018 11:42 pm
Forum: Ionic & Covalent Bonds
Topic: ionization energy
Replies: 3
Views: 80

Re: ionization energy

The reason is because atoms with high ionization levels aren't as likely to give up electrons to make the atom a positively charged cation. Additionally, with more energy required to remove electrons these atoms aren't as compatible with the fluid electron flow of conducting electrical currents.
by 405098546
Sun Oct 28, 2018 11:40 pm
Forum: Lewis Structures
Topic: Lewis Structures
Replies: 13
Views: 169

Re: Lewis Structures

Basically the atom with the lowest ionization energy since these atoms are the most likely to give up or share their electrons.
by 405098546
Sun Oct 28, 2018 11:37 pm
Forum: Ionic & Covalent Bonds
Topic: Octet Rule
Replies: 7
Views: 136

Re: Octet Rule

Yes there are a few exceptions to the octet rule. For example, molecules like NO have an odd number of electrons and in molecules like BCl3 not all the atoms possess 8 electrons.
by 405098546
Sun Oct 21, 2018 11:59 pm
Forum: Trends in The Periodic Table
Topic: Periodic Table Trends
Replies: 5
Views: 128

Re: Periodic Table Trends

Atomic radius gets bigger and farther down to the left. Ionic Radius gets bigger farther down to the left, but there isn't a strong correlation. Electron affinity gets stronger to the left and ionization energy gets larger to the right.
by 405098546
Sun Oct 21, 2018 11:49 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity
Replies: 2
Views: 47

Re: Electron Affinity

It is the ability to attract more electrons
by 405098546
Sun Oct 21, 2018 11:21 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Energy levels of orbitals?
Replies: 10
Views: 148

Re: Energy levels of orbitals?

S<P<D<F because the farther the distance of the orbital from the nucleus the higher the energy that is required to keep the orbital from resisting the inward pull. As a result, the farthest orbital requires the greatest amount of energy
by 405098546
Sun Oct 14, 2018 3:43 pm
Forum: Administrative Questions and Class Announcements
Topic: Grades??
Replies: 4
Views: 120

Re: Grades??

Everything is handed back in discussion and I think they might be posted online at some point.
by 405098546
Sun Oct 14, 2018 3:42 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 41
Views: 789

Re: Speed of Light

For the purposes of this class the speed of light probably will always stay the same. Though I think in certain mediums like water or glass the light of speed can change.
by 405098546
Sun Oct 14, 2018 3:39 pm
Forum: Properties of Light
Topic: Colors and Frequency
Replies: 14
Views: 523

Re: Colors and Frequency

Ya just knowing the general wavelength range for certain electromagnetic radiation like visible light or x-rays should be enough.
by 405098546
Fri Oct 05, 2018 11:28 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: atoms vs molecules vs formula units?
Replies: 3
Views: 69

Re: atoms vs molecules vs formula units?

Yes there is nothing different in calculating an atom, molecule, or formula unit. It just has different meanings and units that need to be marked in your final answer.
by 405098546
Fri Oct 05, 2018 11:22 am
Forum: Limiting Reactant Calculations
Topic: When to use H vs H2
Replies: 7
Views: 169

Re: When to use H vs H2

I remember in high school that there were some elements that always had to be in pairs. The reasoning was that hydrogen would be unstable as a singular atom in itself. So I guess it is necessary to have to do an extra step of multiplying molar mass by 2.
by 405098546
Fri Oct 05, 2018 11:19 am
Forum: Significant Figures
Topic: Significant Figures for E.21 (b)
Replies: 4
Views: 109

Re: Significant Figures for E.21 (b)

Ya I was in the same boat. I spent some time trying to figure out why the book had only 3 sig figs. But clearly the answer needs to have 4.

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