Search found 20 matches

by sid bauer
Sun Jul 30, 2017 11:41 pm
Forum: *Biological Importance of Buffer Solutions
Topic: Limitations to the Henderson-Hasselbach Eq
Replies: 1
Views: 1449

Limitations to the Henderson-Hasselbach Eq

What were the limitations for the Henderson-Hasselbach equation? In other words, when can it NOT be calculated? (i.e. when acids/bases are strong/weak) Also, to get rid of the logs, you can simply raise everything to the power of 10 correct? I've used it for other equations but I'm not sure if you c...
by sid bauer
Sun Jul 30, 2017 11:26 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Question about the exam
Replies: 3
Views: 396

Question about the exam

In some of the equilibrium HW problems, they have you "refer to Table 11.2." Does anyone know if we need to memorize those values/we will get them on the Exam?
by sid bauer
Sun Jul 30, 2017 11:22 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Decomposition
Replies: 2
Views: 257

Re: Decomposition

Thanks! Do you know the formula off hand by chance? I'm currently searching for it haha
by sid bauer
Sun Jul 30, 2017 11:06 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Decomposition
Replies: 2
Views: 257

Decomposition

What is the significance of the % decomposition?
by sid bauer
Sun Jul 30, 2017 9:40 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Temperature
Replies: 4
Views: 420

Re: Temperature

thanks so much!
by sid bauer
Sun Jul 30, 2017 7:47 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Temperature
Replies: 4
Views: 420

Temperature

I'm having a difficult time understanding how equilibrium shift from temperature. Are there any easy concept to remember for solving these problems? Let me know if I need to clarify
by sid bauer
Sun Jul 30, 2017 2:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic formula
Replies: 2
Views: 252

Quadratic formula

I understand that when you apply the quadratic formula, you get two values (one of which is typically negative). What is the concept behind the reason why you would NOT use the negative number to plug back into the equilibrium equation?
by sid bauer
Fri Jul 21, 2017 6:41 am
Forum: Lewis Structures
Topic: double bonds
Replies: 2
Views: 244

double bonds

So after practicing Lewis Structure, I've realized some atoms such as S, C and O create double bonds more often than others. What is the reasoning behind that?
by sid bauer
Tue Jul 18, 2017 11:40 pm
Forum: Octet Exceptions
Topic: Octets
Replies: 8
Views: 483

Re: Octets

Does that apply for all row 3 atoms? That they can all accept more than 8 electrons? If so, can they all accept a total of 10, just like Sulfur?

Thanks
by sid bauer
Tue Jul 18, 2017 11:19 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Mixing Orbitals
Replies: 1
Views: 194

Mixing Orbitals

When mixing orbitals with one another, do you always need similar energies as well as similar symmetry between bonds? If not, what would happen? would they simply not bond?

Thanks!
by sid bauer
Tue Jul 18, 2017 11:16 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Second row Molecules
Replies: 1
Views: 204

Second row Molecules

Why does the order of Molecular Orbital energies change as they cross the second row diatomic?
by sid bauer
Sat Jul 15, 2017 12:44 am
Forum: Hybridization
Topic: Bond Order
Replies: 4
Views: 729

Bond Order

NEED CLARIFICATION: How do you calculate bond order? And what does it mean in terms of chemistry? Can bond order be calculated for just one atom, or does it have to be two atoms joined together?

Thank you!
by sid bauer
Fri Jul 14, 2017 5:43 pm
Forum: Trends in The Periodic Table
Topic: 1st and 2nd ionization energy? [ENDORSED]
Replies: 7
Views: 957

Re: 1st and 2nd ionization energy? [ENDORSED]

In terms of equations, the equation for the first ionization of energy is: Na --> Na+ + e-. Whereas the equation for the second ionization of energy is: Na+ --> Na2+ + e-. Also, it takes MORE energy for the second ionization of energy!

Hope this helps!
by sid bauer
Fri Jul 14, 2017 5:37 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Fajan's Rule
Replies: 1
Views: 280

Fajan's Rule

Can somebody please explain Fajan's Rules of Polarization? What are the trends in charges, anions and cations?

Thank you!
by sid bauer
Fri Jul 14, 2017 5:26 pm
Forum: Lewis Structures
Topic: Exceeded Octet
Replies: 2
Views: 252

Exceeded Octet

How do you determine whether the octect rule is exceeded? And where do you assign those extra pairs?
by sid bauer
Sun Jul 09, 2017 7:34 pm
Forum: DeBroglie Equation
Topic: Neutrons
Replies: 4
Views: 610

Re: Neutrons

Because Neutrons behave like a wave can we use the equation E = mc^2 to find the energy of the neutron if we know the mass of the neutron?
by sid bauer
Sun Jul 09, 2017 7:26 pm
Forum: Properties of Light
Topic: Amplitude of the wave [ENDORSED]
Replies: 7
Views: 517

Re: Amplitude of the wave [ENDORSED]

The amplitude of a wave is directly related to how high energy the wave is.

Think as if you were creating waves on a string fixed at the other end. The harder you jerk it(the more energy you put in) the higher the amplitude of the wave you created will be.
by sid bauer
Sun Jul 09, 2017 7:18 pm
Forum: Einstein Equation
Topic: What is the eV unit? [ENDORSED]
Replies: 6
Views: 2412

Re: What is the eV unit? [ENDORSED]

Also the term electron volt is self defining in that 1 eV is literally the charge of one electron times 1 Volt.
(1.6 x 10 ^-19 C) * (1 kg m^2 s^-2 C^-1) = 1.6 * 10^-19 J

In reality it is just about having ease of units more than anything else

Hope this helps!
by sid bauer
Sun Jul 09, 2017 7:09 pm
Forum: Properties of Light
Topic: Quantum Spin Number
Replies: 1
Views: 167

Quantum Spin Number

So I know that the sign of the Quantum Spin Number defines the direction of the spin, but why is the Quantum Spin Number only equal to +/- 1/2 instead of being +/- 1?
by sid bauer
Fri Jun 30, 2017 9:51 pm
Forum: Properties of Electrons
Topic: electrons
Replies: 2
Views: 311

electrons

Curious. If a photon does not have enough energy to emit an electron from a metal surface, where does that energy go? Does it get stored as potential energy? Or does it simply just escape and become irrelevant?

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