CHEMISTRY COMMUNITY

Elle_Bertuccelli_1B

What is the difference between steric and torsional strain and how would we identify that when looking at the structure?

Elle_Bertuccelli_1B

I'm confused about #3, part a on Quiz 2 (where we are asked to determine the rate limiting step): It makes sense that k1 << k2 implies that k1 is the slow step. However, I don't understand why the reaction at equilibrium is considered the slow step. Usually the slow step isn't at equilibrium and the...

Elle_Bertuccelli_1B

Elle_Bertuccelli_1B

When the slow step comes before the fast step, can the pre-equilibrium approach still be used?

Elle_Bertuccelli_1B

What do you do with a sick chemist?

If you can't helium, and you can't curium, then you might as well barium

Elle_Bertuccelli_1B

Elle_Bertuccelli_1B

I'm always in my element...unless I'm in chemistry class.

Elle_Bertuccelli_1B

Elle_Bertuccelli_1B

When is the equation [delta]S = [delta]H / T negative? I'm confused because the solutions manual contradicts the formula sheet and I'm not sure which one is right (and how to understand this conceptually).

Elle_Bertuccelli_1B

When temperature is involved in the problem, do we use [delta]nRT instead of -P[delta]V for w?

Elle_Bertuccelli_1B

Chemistry is a pain in the acid!!!!!

Elle_Bertuccelli_1B

When calculating pH and concentrations, do we wait to round until the end? I am confused because this is usually how it goes, but the solutions manual rounds every single step of the way.

Elle_Bertuccelli_1B

Is the Heisenberg-Hasselback equation just a shortcut?

Elle_Bertuccelli_1B

How do we tell the difference between a strong acid or base and a weak one? I know that it refers to the donation of protons, but how can we tell by looking at a chemical equation?

Elle_Bertuccelli_1B

I asked a UA this question, and they said to use the bis-, tris-, etc... prefixes whenever a compound is polydentate. If there is a "di" or "tri" in the molecule, that's a dead giveaway to use the other prefixes, but this rule isn't restricted to just those. Therefore, YES, it wo...

Elle_Bertuccelli_1B

When equilibria shifts, what occurs to the reactants and products from which it is shifting? For example, if we decrease the pressure of one of the reactants, the equilibria will shift left in order to try to replace the lost pressure. Does this shift mean the pressure of the products will decrease?...

Elle_Bertuccelli_1B

I've got my ion everyone that is on this website

Elle_Bertuccelli_1B

When constructing a MO structure, I know that there are two different ones for a certain value of Z. Does Z refer to atomic number? What if one element of a compound has Z>8 and one has Z<8?

Elle_Bertuccelli_1B

This chemistry joke is sodium funny!!!

Elle_Bertuccelli_1B

When determining the shape of an atom using VSEPR, how do we determine which region of electron density to replace with a lone pair? We learned about this in Wednesday's lecture but this part was unclear to me.

Thank you!

Elle_Bertuccelli_1B

I'm trying to zinc of a good chemistry joke but it seems like all of the good ones argon. ;)

Elle_Bertuccelli_1B

Could someone explain the concept of the magnetic quantum number? I know it refers to the orientation of the electron, but how can that be applied in context?

Elle_Bertuccelli_1B

Hello,

When asked to calculate the wavelength of an ejected electron, do we use the DeBroglie Equation?

I know that it involves finding the wavelength of a moving object and just want to clarify that we aren't supposed to use the lambda=hc/E equation.

Thanks!

Elle_Bertuccelli_1B

When finding a limiting reactant, what if the mass of only one reactant is given?

E.x. Consider the unbalanced reaction: PCl3+ H2O --->HCl + H3PO3 What mass of HCl is produced by the reaction of 23.6g of PCl3?
I'm confused because the grams of PCl3 is given, but there is no amount given for H20.

CHEMISTRY COMMUNITY

Search found 24 matches

Steric vs. Torsional

Quiz 2 Question

Re: Post All Chemistry Jokes Here

Pre-Equilibrium approach

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Entropy=enthalpy/T

temperature [ENDORSED]

Re: Post All Chemistry Jokes Here

When to round?! [ENDORSED]

Heisenberg-Hasselbach

Strong vs. weak

Re: Is Carbonate bicarbonato or bis(carbonato) [ENDORSED]

Shift in Equilibria

Re: Post All Chemistry Jokes Here

Differentiating between shapes of structure

Re: Post All Chemistry Jokes Here

Presence of Lone Pairs [ENDORSED]

Re: Post All Chemistry Jokes Here

Magnetic Quantum Number

Wavelength of Ejected Electron [ENDORSED]

Limiting Reactant given masses