Search found 14 matches

Sun Jul 30, 2017 8:13 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 11.41
Replies: 1
Views: 255

11.41

Can someone please help me?? I believe I've done everything right but I am still not getting the answer in the back of the book. I converted mg to g, converted each species to moles, I divided by .25 liters to get molarity. Then I squared NH3 and multiplied by the concentration of CO2. Am I missing ...
Sun Jul 30, 2017 7:32 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Question 11.39
Replies: 3
Views: 308

Re: Question 11.39

wouldn't we add the Kc values? I'm also having trouble with this problem and I'm not quite sure which two base equations to look at, from the chart.
Sun Jul 23, 2017 11:11 pm
Forum: Ideal Gases
Topic: Inert gases
Replies: 2
Views: 391

Inert gases

Can someone please explain why adding inert gases to a chamber of wouldn't shift the reaction to either direction? Wouldn't adding inert gas reduce the volume available to the other gases in the chamber?
Sun Jul 23, 2017 10:52 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: NH3
Replies: 1
Views: 202

NH3

Why is NH3 sometimes written as H3N?
Sun Jul 23, 2017 10:37 pm
Forum: Resonance Structures
Topic: resonance vs. isomers
Replies: 4
Views: 3335

resonance vs. isomers

what is the difference between resonance and isomers?
Sun Jul 23, 2017 10:36 pm
Forum: Hybridization
Topic: Unhybridized orbitals
Replies: 1
Views: 195

Unhybridized orbitals

Dr.Lavelle did an example in class that had an unhybridized p orbital. I believe it was ethene. I might have missed something, but I'm still not sure how we would know that there is one 2p orbital that is unhybridized and would lead to a pi bond.
Sun Jul 09, 2017 9:14 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Effective Nuclear Charge 2.37
Replies: 1
Views: 286

Re: Effective Nuclear Charge 2.37

yeah I don't get this either? I think it might have to do with the equation that's like (charge of the electrons)(charge of the nucleus)/distance from the nucleus???
Sun Jul 09, 2017 9:07 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Question 2.17
Replies: 1
Views: 333

Re: Question 2.17

yes, so 2.17 is asking how many total magnetic quantum numbers within a subshell (l) there could be. It would be from -l to positive l, including 0.
Sun Jul 09, 2017 8:49 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Atomic Orbitals
Replies: 4
Views: 547

Re: Atomic Orbitals

from what I understand, atomic orbitals are the wavefunctions of electrons in an atom. More specifically but less discrete, orbitals are ways of plotting out the locations or probable locations of electrons. Due to the 3 dimensional, spherical model of the atom, there are three variables. Further de...
Sun Jul 09, 2017 8:25 pm
Forum: Ionic & Covalent Bonds
Topic: Effective Charge of an Atom
Replies: 2
Views: 414

Effective Charge of an Atom

Why is the effective nuclear charge dependent on the number of electrons present in an atom? Is there a specific equation I should look at to support this?
Sun Jul 02, 2017 9:42 pm
Forum: Properties of Light
Topic: Amplitude versus wavelength
Replies: 4
Views: 370

Re: Amplitude versus wavelength

I thought that amplitude determines intensity? Or was that disproved by the photoelectric effect experiment?
Sun Jul 02, 2017 9:28 pm
Forum: Significant Figures
Topic: Mantissa
Replies: 1
Views: 330

Mantissa

What is Mantissa/what does Mantissa stand for on the significant figures resource sheet Dr.Lavelle posted for us?
Sun Jul 02, 2017 9:24 pm
Forum: DeBroglie Equation
Topic: De Broglie Wavelength
Replies: 23
Views: 1455

Re: De Broglie Wavelength

The De Broglie equation doesn't require frequency?? Unless you meant velocity, in which case yes that should be given if the wavelength is unknown.
Sun Jul 02, 2017 8:15 pm
Forum: DeBroglie Equation
Topic: Wave-like properties
Replies: 2
Views: 384

Wave-like properties

What is the definitive cut-off wavelength value for determining whether an object has wave-like properties?