## Search found 13 matches

Mon Jul 31, 2017 8:43 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: 12.21
Replies: 1
Views: 277

### Re: 12.21

I do not quite understand either. In the answer they use the equation ka*kb=kw. But my question is why we can seem ka as the concentration of H3O+.
Fri Jul 28, 2017 10:29 pm
Forum: Ideal Gases
Topic: Partial pressure when calculating K
Replies: 4
Views: 460

### Partial pressure when calculating K

If we want to use partial pressure to calculate equilibrium constant, shell we need to use PV=NRT this equation in order to change partial pressure to the concentration( N/V)?
Fri Jul 28, 2017 3:29 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: What actually work in the buffer
Replies: 1
Views: 540

### What actually work in the buffer

The buffer solution is composed by the salt and weak acid/base. Meanwhile the weak acid/base can also react with water. So when we put in the strong acid/base, which kind of things really react with the strong acid/base to keep the pH value?
Mon Jul 24, 2017 12:33 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Name of molecules shape
Replies: 1
Views: 248

### Name of molecules shape

Is there anyone can tell me what is the name of AX5E? I can't find it in my note.
Thu Jul 20, 2017 10:02 pm
Forum: Hybridization
Topic: resonance and hybridization
Replies: 1
Views: 257

### resonance and hybridization

Is there any relationship between resonance and hybridization? They seem quit similar because they both talks about the electrons change their position to get a stable state.
Sun Jul 16, 2017 11:04 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-sh aped
Replies: 1
Views: 279

### T-sh aped

When I checked the answer after I did the homework, I found there is a world "T-sh aped" wrote in the answer book. Is there anybody known what is that mean?
And why the shape of ICl3 is that shape?
Tue Jul 04, 2017 3:20 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: quantum number and electron number
Replies: 1
Views: 299

### quantum number and electron number

When I did the homework, I found that I don't know how to use the quantum number to get the electron number, especially the question does not give whole 4 number. Is there anyone knows how to do?
Mon Jul 03, 2017 3:45 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: wave function and orbitals
Replies: 1
Views: 254

### wave function and orbitals

hey guys, is there anyone knows what is the relationship between the wave function and atomic orbital. Is the Greek letter ψ just used to illustrate the quantum number?
Sun Jul 02, 2017 7:48 pm
Forum: Molarity, Solutions, Dilutions
Topic: problem g13 help
Replies: 3
Views: 476

### Re: problem g13 help

In my opinion you can use 3L to find out new concentration of the solution.
Sun Jul 02, 2017 6:36 pm
Forum: Properties of Light
Topic: Amplitude of the wave [ENDORSED]
Replies: 7
Views: 660

### Amplitude of the wave[ENDORSED]

Can the amplitude of the wave influence the energy of the photons. If can, how?
Sun Jul 02, 2017 6:30 pm
Forum: Properties of Electrons
Topic: About the holiday in Tuesday
Replies: 2
Views: 325

### About the holiday in Tuesday

Will the discussion class and office will change because it is the holiday in Tuesday?
Sun Jul 02, 2017 6:21 pm
Forum: Molarity, Solutions, Dilutions
Topic: problem g13 help
Replies: 3
Views: 476

### Re: problem g13 help

first step：find out the number of mole
second step: calculate the concentration of the new solution
third step: use the new concentration multiply the 100ml
Sun Jul 02, 2017 6:15 pm
Forum: Properties of Light
Topic: frequency of electromagnetic field radiation and extent of change in the electrical field
Replies: 1
Views: 238

### frequency of electromagnetic field radiation and extent of change in the electrical field

Hey guys, I cannot understand that is there any relationship between frequency of electromagnetic field radiation and extent of change in the electrical field. Is there any body can explain that, and it would be perfect to post the definition of the extent of the change in the electrical field