Search found 19 matches

by swatiperepa
Sun Mar 12, 2017 11:46 pm
Forum: *Nucleophiles
Topic: Nucleophiles and Electronegativity
Replies: 5
Views: 1168

Re: Nucleophiles and Electronegativity

Do we need to have the more complex nucleophiles and electrophiles in chapter 4 (the ones drawn out in the first few pages of the chapter) of the organic course reader memorized? Or are those simply for reference?
by swatiperepa
Sun Mar 05, 2017 10:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011406

Re: Post All Chemistry Jokes Here

:)
by swatiperepa
Mon Feb 27, 2017 9:24 pm
Forum: *Electrophilic Addition
Topic: Electrophilic addition reaction (p. 84 CR)
Replies: 1
Views: 303

Electrophilic addition reaction (p. 84 CR)

On page 84 of the course reader, there is an example of a two step reaction where the bond between H-Br is broken. How do you know that the H bonds with the carbocation before the Br bonds?
by swatiperepa
Sun Feb 26, 2017 1:31 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius plot vs. activation energy
Replies: 3
Views: 616

Re: Arrhenius plot vs. activation energy

Since the slope is m=-Ea/R, the higher the activation energy, the steeper the line. There is a plot showing this on page 75 of the course reader.
by swatiperepa
Wed Feb 15, 2017 1:29 pm
Forum: Balancing Redox Reactions
Topic: Balancing equations
Replies: 10
Views: 901

Re: Balancing equations

I keep getting confused on when you need to switch the sign of the reduction potential. If the given half equation has already flipped the reduction potential so that it is negative, do you simply add together the reduction potentials or do you flip the reduction potential back, and then do cathode ...
by swatiperepa
Sun Feb 12, 2017 9:12 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Homework 8 problems
Replies: 1
Views: 289

Re: Homework 8 problems

Yes, I'm having trouble with this one too. Pls help!!
by swatiperepa
Fri Feb 10, 2017 12:17 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Molar Heat Capacity
Replies: 2
Views: 355

Re: Molar Heat Capacity

Does anyone know if we will always be given the molar heat capacities of ideal gases when we are trying to calculate heat? If not, would you mind explaining that Cp,m=(5/2)R thingy please
by swatiperepa
Wed Feb 08, 2017 2:53 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Heating Curves
Replies: 1
Views: 278

Heating Curves

Is it necessary for us to understand heating curves? If so, can someone please explain to me what the heating curve is trying to show? I was looking at the one in the textbook in Chapter 8 (Box 8.1) and it was confusing me. (It's the one with "Differential Power" as the y-axis and "Te...
by swatiperepa
Sun Feb 05, 2017 7:51 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeter Questions
Replies: 3
Views: 289

Re: Calorimeter Questions

Do we need to know how to do questions related to calibrating the calorimeter? If so, how do we do those? Do you just make the value of q negative?
by swatiperepa
Sun Jan 29, 2017 10:29 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011406

Re: Post All Chemistry Jokes Here

This cat is my hero
by swatiperepa
Sun Jan 22, 2017 8:39 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011406

Re: Post All Chemistry Jokes Here

The pickup lines are always the best
by swatiperepa
Sun Jan 15, 2017 5:36 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Work of Expansion
Replies: 1
Views: 181

Work of Expansion

Can someone please explain work of expansion? I remember Professor Lavelle mentioning something about constant pressure and volume change, but I don't really understand.
by swatiperepa
Sat Dec 03, 2016 11:10 pm
Forum: Naming
Topic: Polydentates
Replies: 4
Views: 521

Re: Polydentates

Does the name sulfato refer to both (SO4)2- and (OSO3)2-? I know for (NO2)2- there is a different name when the O is bonding to the transition metal instead of the N. Is sulfate like that as well?
by swatiperepa
Sun Nov 27, 2016 11:40 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: MO adding/deleting e-
Replies: 3
Views: 448

Re: MO adding/deleting e-

In a homonuclear molecule does it matter to which atom you add the e-? For example, If the ion has 2e- should you distribute the electrons evenly with one e- to each atom, or does it not matter?
by swatiperepa
Sun Nov 13, 2016 4:30 pm
Forum: Student Social/Study Group
Topic: Quiz 3
Replies: 2
Views: 615

Quiz 3

Does anyone know what material will be covered in Quiz 3? As in up to which lecture?
by swatiperepa
Sun Oct 30, 2016 9:50 pm
Forum: General Science Questions
Topic: Naming Chemical Compounds
Replies: 5
Views: 866

Re: Naming Chemical Compounds

Does anyone know if there is a good, comprehensive list of the all the polyatomics we should know?
by swatiperepa
Fri Oct 21, 2016 7:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011406

Re: Post All Chemistry Jokes Here

Where does the German chemistry teacher put the used batteries of an electrolytic experiment?


In the zinc. :)
by swatiperepa
Fri Oct 14, 2016 3:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011406

Re: Post All Chemistry Jokes Here

What sharp object do you get when you combine potassium, nickel and iron?


--->KNiFe
by swatiperepa
Fri Sep 30, 2016 5:10 pm
Forum: General Science Questions
Topic: Naming Chemical Compounds
Replies: 5
Views: 866

Re: Naming Chemical Compounds

I find the Crash Course Chemistry to be very helpful when it comes to brushing up on old Chem topics! This one on nomenclature helped me with naming: https://www.khanacademy.org/partner-con ... menclature

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