Search found 10 matches

by JavierMelgoza2E
Sat Mar 18, 2017 6:20 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Chair conformations Cis and Trans
Replies: 2
Views: 849

Chair conformations Cis and Trans

I was wondering whether Cis was with both being the same orientation or the same direction. Can it still be Cis with a an equatorial up and equatorial down or would that be considered Trans? Thanks!
by JavierMelgoza2E
Sun Mar 12, 2017 11:41 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Equatorial and Axial confusion
Replies: 1
Views: 306

Equatorial and Axial confusion

I am still confused on equatorial and axial. Can we put the bigger molecule in either axial or equatorial and would it make a difference? Thanks in advance!
by JavierMelgoza2E
Sun Mar 05, 2017 11:15 pm
Forum: *Cycloalkenes
Topic: Benzene
Replies: 2
Views: 400

Benzene

Should we expect Benzenes to be part of Quiz 3? If so, then can I also label them as Cyclobenzene or is that already implied?
by JavierMelgoza2E
Sun Feb 26, 2017 11:32 pm
Forum: *Cycloalkanes
Topic: Cyclohexene and double bonds
Replies: 2
Views: 394

Cyclohexene and double bonds

When I came across a cyclohexene with a methyl group and I saw that it had a double bond. Does it matter where we place the double bond and methyl group in the ring and will it change the cyclohexene into another compound?
by JavierMelgoza2E
Sun Feb 19, 2017 11:08 pm
Forum: Second Order Reactions
Topic: Is there such a thing as a Third Order Reaction?
Replies: 5
Views: 1227

Is there such a thing as a Third Order Reaction?

I was looking some videos up on youtube about zero, first, and second order reactions and they briefly mention a third and fourth order reaction. Is it possible that we will ever use this on our quiz and final?
by JavierMelgoza2E
Sun Feb 12, 2017 11:38 pm
Forum: Balancing Redox Reactions
Topic: H in redox
Replies: 1
Views: 261

H in redox

I was searching online for any special rules we'd have to follow in order to get the oxidation numbers for each element and I found some websites stating that Hydrogen is both +1 and -1 for metals and nonmetals. One in particular said that Hydrogen is -1 when with non-metals and + with metals and th...
by JavierMelgoza2E
Sun Feb 05, 2017 11:09 pm
Forum: Balancing Redox Reactions
Topic: Oxygen Ion Charge
Replies: 3
Views: 855

Oxygen Ion Charge

Looking at Redox rules that some of the elements have and I saw that Oxygen has a -1 charge rather than a -2. How can that be? Is there certain compounds that will cause oxygen to have a -1 charge? Does oxygen impact the charge on other elements as well? Thanks!
by JavierMelgoza2E
Sun Jan 29, 2017 11:03 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Ex 9.7 pg 331. Boltzmanns Formula
Replies: 1
Views: 268

Ex 9.7 pg 331. Boltzmanns Formula

I'm still confused on the whole concept of W. and how in the first step of Example 9.7 they got W = 2^4? What exactly does this represent? I see that W is the number of ways atom molecules could be arranged, but will W always be given? We would have to find that out on our own if given enough inform...
by JavierMelgoza2E
Sun Jan 22, 2017 11:06 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Bond Enthalpies of Diatomic Molecules
Replies: 1
Views: 268

Bond Enthalpies of Diatomic Molecules

In Ch.8 in Table 8.6 are those the only Molecules that we could use? Is there more? I've been sort of confused and would like some clarification. Thanks!
by JavierMelgoza2E
Sun Jan 15, 2017 11:12 pm
Forum: Phase Changes & Related Calculations
Topic: Expansion work
Replies: 1
Views: 289

Expansion work

Does anybody know whether or not we will be using these equations heavily? w = PexA x d or w = -Pex V ? If so would someone care to explain on how to utilize these equations? Thanks!

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