Search found 10 matches

by KendraArriaga 1F
Sat Mar 12, 2016 3:13 pm
Forum: Administrative Questions and Class Announcements
Topic: DAYLIGHT SAVINGS TIME!
Replies: 1
Views: 581

DAYLIGHT SAVINGS TIME!

Hi everyone! Just a PSA, tomorrow (Sunday, March 13), Daylight Savings time will begin at 2am. The time will "spring" forward one hour (get it, "Spring" aha). So make sure you set your clocks forward one hour, because you DO NOT want to be an hour late to our final tomorrow. Just...
by KendraArriaga 1F
Sat Mar 05, 2016 9:52 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Most stable confirmation?
Replies: 1
Views: 381

Most stable confirmation?

When being asked to draw the "most stable conformation", how do we determine whether to use butterfly, envelope, chair, or boat conformations?
by KendraArriaga 1F
Sun Feb 21, 2016 9:32 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalyst vs. Intermediate
Replies: 2
Views: 1037

Re: Catalyst vs. Intermediate

That did help, thank you!
by KendraArriaga 1F
Sun Feb 21, 2016 9:07 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalyst vs. Intermediate
Replies: 2
Views: 1037

Catalyst vs. Intermediate

I'm having difficulty identifying whether a species is a catalyst or an intermediate in a chemical reaction. How do I know when it is a catalyst or intermediate?
by KendraArriaga 1F
Mon Feb 01, 2016 1:33 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Salt Bridges?
Replies: 2
Views: 223

Re: Salt Bridges?

Thanks, that was very helpful!
by KendraArriaga 1F
Sun Jan 31, 2016 11:46 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Salt Bridges?
Replies: 2
Views: 223

Salt Bridges?

A salt bridge allows for ion transfer to allow two solutions to stay neutral, but how does a salt bridge accomplish this? How does it work?
by KendraArriaga 1F
Sun Jan 24, 2016 1:49 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs Free Energy in relation to LS2
Replies: 1
Views: 275

Gibbs Free Energy in relation to LS2

In LS2 we learn that in any system, the total energy is the sum of usable energy that can do work and the unusable energy that is lost to disorder. The equation is: Total energy = Usable energy + Unusable energy Given that "total energy" is enthalpy (H) , "usable energy" that can...
by KendraArriaga 1F
Sun Jan 24, 2016 1:17 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz #1
Replies: 3
Views: 503

Re: Quiz #1

My TA told us that all of Chapters 8 and 9 (according to the sixth edition of the textbook) will be covered.
by KendraArriaga 1F
Sat Jan 16, 2016 10:39 pm
Forum: Calculating Work of Expansion
Topic: Work equation
Replies: 2
Views: 604

Re: Work equation

When a gas expands, it does work against the lid that contains it - the gas is "pushing" against the lid and is ultimately losing energy. Therefore, the negative sign is incorporated into the equation to show that its expansion represents a loss of energy.
by KendraArriaga 1F
Fri Jan 08, 2016 5:51 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Heat vs. Specific Heat Capacity
Replies: 4
Views: 1533

Heat vs. Specific Heat Capacity

I'm still having difficulty understanding the difference between heat capacity and specific heat capacity despite the professor's explanation in todays lecture. May someone please clarify the difference between these two terms?

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