Search found 30 matches

by 105002507
Fri Dec 07, 2018 8:04 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Strength of acid
Replies: 4
Views: 117

Re: Strength of acid

Moving down a group there is an increase in the number of valence shells = higher shielding effect. This means that the valence e-s feel a weaker pull from the nucleus and can easily dissociate = stronger acid
by 105002507
Fri Dec 07, 2018 7:59 pm
Forum: Conjugate Acids & Bases
Topic: Neutralization Reactions
Replies: 6
Views: 316

Re: Neutralization Reactions

You should use water as another product and fill in the reactants after
by 105002507
Fri Dec 07, 2018 7:58 pm
Forum: Lewis Acids & Bases
Topic: HCl vs. HI
Replies: 7
Views: 129

Re: HCl vs. HI

the larger the atomic radius indicates a longer bond and stronger acid
by 105002507
Sun Dec 02, 2018 1:07 pm
Forum: Conjugate Acids & Bases
Topic: Acid and Bases [ENDORSED]
Replies: 2
Views: 205

Re: Acid and Bases [ENDORSED]

Yes, acids and bases can neutralize each other.
by 105002507
Sun Dec 02, 2018 1:06 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: Weak Bases with Nitrogen
Replies: 4
Views: 244

Re: Weak Bases with Nitrogen

It is important to know that a base is an e- donor!!
by 105002507
Sun Dec 02, 2018 1:05 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strength of an acid
Replies: 14
Views: 556

Re: Strength of an acid

The higher the electronegativity difference, the stronger the acid
by 105002507
Sun Dec 02, 2018 1:04 pm
Forum: Lewis Acids & Bases
Topic: HI or HCl: stronger acid
Replies: 8
Views: 572

Re: HI or HCl: stronger acid

HI would be the stronger acid
by 105002507
Sun Dec 02, 2018 1:04 pm
Forum: Naming
Topic: How to name
Replies: 6
Views: 182

Re: How to name

I'm pretty sure ligands are named alphabetically
by 105002507
Sun Dec 02, 2018 1:02 pm
Forum: General Rate Laws
Topic: Unique Reaction Rates [ENDORSED]
Replies: 32
Views: 61055

Re: Unique Reaction Rates [ENDORSED]

The unique rate depends on the stoichiometric coefficient & stays the same for all products and reactants
by 105002507
Sun Dec 02, 2018 1:01 pm
Forum: Lewis Acids & Bases
Topic: Lewis and Bronsted
Replies: 8
Views: 167

Re: Lewis and Bronsted

Lewis acid: e- acceptor
Lewis base: e- donor

Bronsted acid: proton donor
Bronsted base: proton acceptor
by 105002507
Sun Dec 02, 2018 12:55 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 69
Views: 22615

Re: formula units [ENDORSED]

no, degrees are not an si unit. Si unit would be a radian
by 105002507
Tue Nov 20, 2018 11:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSPER Formula
Replies: 7
Views: 155

Re: VSPER Formula

A just stands for the central atom!
by 105002507
Tue Nov 20, 2018 11:00 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 5
Views: 139

Re: VSEPR

Yes because the lone pairs push down on the rest of the bonds and affect the degree of angle
by 105002507
Tue Nov 20, 2018 10:59 pm
Forum: Lewis Structures
Topic: Lewis structure for POCl3
Replies: 7
Views: 264

Re: Lewis structure for POCl3

P is the least electronegative in comparison and therefore is the central atom. It also has the ability to be an expanded octet
by 105002507
Sun Nov 11, 2018 4:35 pm
Forum: Dipole Moments
Topic: Dipole
Replies: 8
Views: 212

Re: Dipole

Do dipoles matter when drawing lewis structures?
by 105002507
Sun Nov 11, 2018 4:33 pm
Forum: Resonance Structures
Topic: bond length
Replies: 5
Views: 138

Re: bond length

The bond lengths are still the same probably because of resonance. All bond lengths are the same even though they are single or double because resonances are hybrids
by 105002507
Sun Nov 11, 2018 3:20 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Isoelectronic
Replies: 14
Views: 569

Re: Isoelectronic

Can elements only be isoelectronic if they have the same # of valence electrons?
by 105002507
Sun Nov 11, 2018 3:00 pm
Forum: Octet Exceptions
Topic: Octet vs formal charge
Replies: 16
Views: 588

Re: Octet vs formal charge

I think formal charge is more important (with 0 being the most stable) because there are expections for certain elements regarding the octet rule
by 105002507
Sun Nov 04, 2018 7:17 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Alternative version of formula
Replies: 7
Views: 364

Alternative version of formula

Does the formula...

FC = group # - (bonds + nonbinding e-)

work the same as the one presented in lecture? This formula makes more sense to me and seems to result in all the same results.
by 105002507
Wed Oct 31, 2018 12:06 am
Forum: Resonance Structures
Topic: How to tell when an molecule is resonant?
Replies: 7
Views: 333

Re: How to tell when an molecule is resonant?

whats the maximum number of different ways to write a lewis structure?
by 105002507
Wed Oct 31, 2018 12:04 am
Forum: Lewis Structures
Topic: Valence Electrons
Replies: 7
Views: 120

Re: Valence Electrons

I thought phosphorus had 5 valence electrons?
by 105002507
Tue Oct 30, 2018 11:07 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Cu+ electron configuration
Replies: 2
Views: 102

Cu+ electron configuration

I am confused on why the electron configuration of Cu is not [Ar]4s^2 3d^9. this is question 3.5 6th edition
by 105002507
Thu Oct 25, 2018 7:39 pm
Forum: Trends in The Periodic Table
Topic: Ionization energies
Replies: 9
Views: 260

Re: Ionization energies

what does ionization energy mean?
by 105002507
Thu Oct 25, 2018 7:37 pm
Forum: Einstein Equation
Topic: Photons and E=hv
Replies: 5
Views: 383

Re: Photons and E=hv

E is the energy of one photon, v is frequency, and h is plank's constant
by 105002507
Thu Oct 25, 2018 7:37 pm
Forum: Einstein Equation
Topic: λ=h/p vs λ=hc/E
Replies: 6
Views: 482

Re: λ=h/p vs λ=hc/E

what units do we use for each of the constants/ variables?
by 105002507
Thu Oct 25, 2018 7:36 pm
Forum: Einstein Equation
Topic: Units
Replies: 17
Views: 580

Re: Units

When do we use kg?
by 105002507
Wed Oct 24, 2018 10:26 am
Forum: Properties of Light
Topic: kg or g [ENDORSED]
Replies: 11
Views: 302

Re: kg or g [ENDORSED]

well everything uses kg even though molar mass is given in g per mole. it makes it easier to write out
by 105002507
Sun Oct 21, 2018 11:49 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Representation
Replies: 4
Views: 162

Re: Representation

The uncertainty principle has two complementary variables for which there is a limit to the precision with which we can measure either. Essentially, there's the uncertainty in momentum and the uncertainty in position of a particle. These variables represent the precision to which either the momentum...
by 105002507
Wed Oct 17, 2018 1:19 am
Forum: Administrative Questions and Class Announcements
Topic: DOWNLOAD SESSION WORKSHEETS HERE - Sundays 4-6pm (Karen) [ENDORSED]
Replies: 135
Views: 28918

Re: DOWNLOAD SESSION WORKSHEETS HERE - Sundays 4-6pm (Karen) [ENDORSED]

Thank you very much!! These worksheets are extremely helpful
by 105002507
Wed Oct 17, 2018 1:17 am
Forum: Photoelectric Effect
Topic: Photoelectric effect
Replies: 5
Views: 122

Re: Photoelectric effect

It is because EMR consists of particles of energy called photos and each of those photos has a fixed energy of hV. This is according to Einstein.

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