Search found 17 matches

by Cristian Yanes 1L
Sat Mar 12, 2016 1:57 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Winter 2013 Q.6B
Replies: 1
Views: 412

Re: Winter 2013 Q.6B

Those common names were all given on that final, so I'm assuming that they would be given on ours as well!

Best of luck studying,

Cristian
by Cristian Yanes 1L
Sun Mar 06, 2016 2:51 pm
Forum: *Alcohols
Topic: Types of alcohols
Replies: 1
Views: 440

Re: Types of alcohols

Hi Katie,

In a tertiary alcohol, the carbon attached to the hydroxy group (-OH) is attached to 3 other carbons for its 3 other bonds, which in the case of 2-methyl-2-butanol, it is!


Hope I helped,

Cristian
by Cristian Yanes 1L
Mon Feb 29, 2016 10:07 pm
Forum: *Alkanes
Topic: Quiz 3 Preparation
Replies: 34
Views: 11287

Re: Quiz 3 Preparation

Curtis Ngo_4E wrote:Will we be asked about common names on the quiz? Or only IUPAC naming?


Hi my good pal Curtis,

I believe I read on another post from a TA that we will be asked about both common names and IUPAC naming.
by Cristian Yanes 1L
Sat Feb 27, 2016 1:28 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: cis Z and trans E and double bonds
Replies: 1
Views: 385

Re: cis Z and trans E and double bonds

Hi Miriam, An organic molecule is cis when the two carbons next to those involved in the double bond on both sides are facing the same direction. Such as this: "\_/" (assume the line in between them is a double bond). On a similar note, an organic molecule is trans when the two carbons nex...
by Cristian Yanes 1L
Sat Feb 27, 2016 1:22 pm
Forum: *Alkynes
Topic: Tripple bond line structure
Replies: 2
Views: 941

Re: Tripple bond line structure

Hi Grace, Line structures can be drawn in any shape as long as they properly reflect the formula being asked for/name/etc, so it is just coincidental that the triple bond line structures are drawn in straight lines (perhaps to show some clarity). So, triple bond line structures can also be drawn as ...
by Cristian Yanes 1L
Sat Feb 27, 2016 1:19 pm
Forum: *Cycloalkenes
Topic: Longest chain of carbons
Replies: 1
Views: 323

Re: Longest chain of carbons

Hi Charlotte,

From what I've found, generally, when there is a cyclo/ring involved in the question, that will be the longest chain of carbons.

Hope this helps!
Cristian
by Cristian Yanes 1L
Sat Feb 27, 2016 1:17 pm
Forum: *Alkenes
Topic: Can we draw line structures in multiple ways?
Replies: 2
Views: 371

Re: Can we draw line structures in multiple ways?

Hi Edris,

You can draw the line structure in a wide variety of ways, as long as it properly reflects the question being asked!


Cristian
by Cristian Yanes 1L
Sat Feb 27, 2016 1:14 pm
Forum: *Cycloalkanes
Topic: Quiz 3 Preparation 1, Number 5
Replies: 3
Views: 622

Re: Quiz 3 Preparation 1, Number 5

Hi Melissa,

Functional groups ALWAYS get the priority on the lowest numbering, that is why iodo is given the lowest number.

Hope this helps!
by Cristian Yanes 1L
Thu Feb 25, 2016 7:52 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Oder with respect to a reactant
Replies: 1
Views: 324

Re: Oder with respect to a reactant

Hello! Hopefully this helps-- Let's say reactants = A B and C Step 1: Look for two trials where nothing but the concentration of a single reactant changes (as you mentioned) and observe the rate change between those two trials. Did it double as the concentration of the reactant doubled? First-order....
by Cristian Yanes 1L
Sat Feb 20, 2016 11:16 pm
Forum: General Rate Laws
Topic: Difference Between General Rate Laws and Rate=k[A]^n
Replies: 2
Views: 474

Re: Difference Between General Rate Laws and Rate=k[A]^n

Hey Sebastian,

You can use the average/unique rate of a reaction to find the rate of reaction of 1 mole of reactant. Also, sometimes it will specifically ask you for it. However, the rate law is more commonly used/asked for.


Hope I helped!

Cristian
by Cristian Yanes 1L
Sat Feb 13, 2016 12:25 am
Forum: Balancing Redox Reactions
Topic: Cell Diagrams
Replies: 4
Views: 565

Re: Cell Diagrams

Hi! So for abbreviated cell diagrams, you would put the electrode/anode on the very left (aka the solid in the oxidation reaction), followed by a | then you group together all the elements of the same state. Then the electrode/cathode (aka the solid in the reduction reaction) goes on the very right,...
by Cristian Yanes 1L
Fri Feb 05, 2016 12:51 pm
Forum: Balancing Redox Reactions
Topic: 14.17: why are only Fe and MnO4 included?
Replies: 1
Views: 380

Re: 14.17: why are only Fe and MnO4 included?

Hey Annika, Cl and K are not included as they cancel out on both sides of the equation and therefore do not affect the equation in any way. So, they are just kind of ignored. An "acidified solution" is a redox reaction that takes place in under acidic conditions, so you would balance it us...
by Cristian Yanes 1L
Mon Feb 01, 2016 4:30 pm
Forum: Balancing Redox Reactions
Topic: Course Reader Balance Example
Replies: 1
Views: 262

Re: Course Reader Balance Example

I have not referenced to the actual material you're talking about in the course reader, but based off the problem written in your question, both sides are +6 on charge (+6 on the left from the 2 Fe (3+) and +6 on the right from the Cu (2+) and then 2 Fe (2+)).
by Cristian Yanes 1L
Wed Jan 27, 2016 4:26 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Isothermal and reversible
Replies: 3
Views: 555

Re: Isothermal and reversible

Alex Chiodo Ortiz 3G wrote:So for an isothermal reaction you would still use U=q+w because q still exists? But doesn't q=nCdeltaT, and isn't deltaT 0 in isothermal, so wouldn't it be U=w?


Hi Alex,
For an isothermal reaction, q=-w, as deltaU=0.
by Cristian Yanes 1L
Sat Jan 23, 2016 7:50 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Constant Volume/Pressure when Calculating S
Replies: 1
Views: 282

Re: Constant Volume/Pressure when Calculating S

Hi!
From my experience with the homework questions/other sample questions, all the problems have specifically stated, "while maintaining constant pressure" or something similar that. Hope I helped!
by Cristian Yanes 1L
Sun Jan 17, 2016 1:47 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Question 8.19 units and equation
Replies: 6
Views: 1309

Re: Question 8.19 units and equation

I've noticed that for a few problems the solutions manual/textbook round multiple times, leading to a bit of a difference in answers.
by Cristian Yanes 1L
Thu Jan 07, 2016 10:39 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess' Law homework 8.57
Replies: 2
Views: 356

Re: Hess' Law homework 8.57

That is correct, delta Hc stands for the change of enthalpy when one mole of a substance is completely combusted.

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