Search found 18 matches

by marg44
Sun Dec 09, 2018 3:08 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Why HF is a weaker acid than HCl
Replies: 11
Views: 114

Re: Why HF is a weaker acid than HCl

I got this wrong on the test but that’s okay.
by marg44
Sun Dec 09, 2018 3:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Thank you!
Replies: 1
Views: 58

Thank you!

Thanks chem community for all the help this quarter. See you in 14b:)
by marg44
Sat Dec 08, 2018 7:21 pm
Forum: Administrative Questions and Class Announcements
Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
Replies: 118
Views: 4115

Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]

Can someone explain 41c? I'm confused as to why the nitrogen with the lone pair can accept the proton but not the oxygen.
by marg44
Sun Dec 02, 2018 11:18 pm
Forum: Bronsted Acids & Bases
Topic: Transition Metals
Replies: 3
Views: 27

Transition Metals

Will we have to write the molecules in reverse on the test so we know which lone pair is binding or did Lavelle just do that for the examples so it was more clear for us?
by marg44
Sun Dec 02, 2018 11:16 pm
Forum: Biological Examples
Topic: Knowledge of Biological Applications for Final
Replies: 5
Views: 56

Re: Knowledge of Biological Applications for Final

Does anyone know what he will ask about the chemo drugs? will it be more conceptual and like how the molecule is effective?
by marg44
Sun Dec 02, 2018 11:11 pm
Forum: Hybridization
Topic: Sigma bonds
Replies: 9
Views: 78

Re: Sigma bonds

For these sigma and pi bonds, is one bond stronger than the other? Or are they of equal strength?
by marg44
Mon Nov 26, 2018 10:15 am
Forum: Hybridization
Topic: When to hybridized?
Replies: 6
Views: 48

Re: When to hybridized?

I think Lavelle said it would be more conceptual but I’m not sure if that means entirely conceptual or just similar to the homework problems.
by marg44
Mon Nov 26, 2018 10:08 am
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 9
Views: 46

Re: VSEPR

Anjali_Kumar3E wrote:What is the steric number and why is it important?

To answer your question the steric number is the number of atoms bonded to a central plus the number of lone pairs on that atom. It’s used to help determine molecular shape using VSEPR
by marg44
Mon Nov 26, 2018 10:04 am
Forum: Hybridization
Topic: Hybridization with Lone Pairs
Replies: 4
Views: 31

Re: Hybridization with Lone Pairs

Are we going to be dealing with resonance structure and delocalized atoms on this Friday’s test?
by marg44
Sun Nov 18, 2018 11:22 pm
Forum: Electronegativity
Topic: Is it best to memorize electronegativity?
Replies: 8
Views: 135

Re: Is it best to memorize electronegativity?

I think it is important to know the general trend of electronegativity on the periodic table.
by marg44
Sun Nov 18, 2018 11:18 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Dipole moments
Replies: 8
Views: 69

Re: Dipole moments

Certain Dipole moments will cancel each out when they are moving in opposite direction like when the attraction moves away from the center such as in CH4.
by marg44
Sun Nov 18, 2018 11:12 pm
Forum: Hybridization
Topic: Bond Angles
Replies: 12
Views: 148

Re: Bond Angles

I'm not sure if it's the only way but it is the only way Lavelle has taught us in class.
by marg44
Sun Nov 11, 2018 11:40 pm
Forum: Bond Lengths & Energies
Topic: Induced dipole interation
Replies: 2
Views: 37

Re: Induced dipole interation

It happens when an ion or dipole makes another atom or molecule a dipole that wasn’t a dipole before. They’re pretty weak forces.
by marg44
Sun Nov 11, 2018 11:13 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Naming bond angles
Replies: 1
Views: 24

Naming bond angles

Are we going to need to know how to name the bond angles???
by marg44
Sun Nov 11, 2018 11:07 pm
Forum: Ionic & Covalent Bonds
Topic: Homework question 6.1
Replies: 1
Views: 39

Homework question 6.1

For this question it asks to list all possible intermolecular bonds and since hydrogen bonds are dipole forces should I list both? Or just hydrogen bonds?
by marg44
Sun Nov 04, 2018 11:57 pm
Forum: Empirical & Molecular Formulas
Topic: Energy Emission of Photons
Replies: 1
Views: 52

Energy Emission of Photons

Why will the energy emitted be positive if it's emitted won't it be negative because it's losing energy????????????
by marg44
Sun Nov 04, 2018 11:09 pm
Forum: Empirical & Molecular Formulas
Topic: Garlic Bread #1
Replies: 2
Views: 129

Garlic Bread #1

Can someone help me with #1? I tried a couple things but I keep getting wild numbers.
by marg44
Sun Nov 04, 2018 11:03 pm
Forum: Ionic & Covalent Bonds
Topic: Ionization Energies
Replies: 13
Views: 139

Ionization Energies

Ionziation energies increase going up and to the right so would Helium have the highest ionization energy?

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