Search found 14 matches

by Vandan_Patel_3L
Fri Mar 17, 2017 1:53 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: (E)-But-2-en-1-ol
Replies: 1
Views: 625

Re: (E)-But-2-en-1-ol

Because there is a double bond you need to identify the geometric isomer, being cis or tans.
by Vandan_Patel_3L
Fri Mar 17, 2017 1:51 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Ring Flip
Replies: 1
Views: 247

Re: Ring Flip

The ring flip just two ways of drawing the chair conformation and it occurs with random collisions. Both have the same energy except when there are substituents. When this occurs there is one chair structure that is preferred based on the one that has the lower energy.
by Vandan_Patel_3L
Mon Mar 13, 2017 2:32 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram and Pt(s)
Replies: 4
Views: 540

Re: Cell Diagram and Pt(s)

You add Pt(s) when the reactants are any other phase than a solid so that there is something that can transfer the electrons as it is inert and will not participate in the chemical reaction.
by Vandan_Patel_3L
Mon Mar 13, 2017 2:27 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: A in the Arrhenius equation
Replies: 2
Views: 383

Re: A in the Arrhenius equation

A is also usually used when a catalyst or enzyme is discussed as that is the factor that gets affected when the enzyme positions a molecule in a certain way so that the reaction will occur.
by Vandan_Patel_3L
Tue Mar 07, 2017 3:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 16515

Re: Quiz 3 Winter 2017

Can someone explain when to use tert vs neo and sec vs iso please?
by Vandan_Patel_3L
Tue Mar 07, 2017 3:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 16515

Re: Quiz 3 Winter 2017

Julie Barreto 3A wrote:how would you draw out 2-butene or anything with a number in front of it ???


The 2 in two butene means that there is a double bond as it ends in "en" and the double bond is between Carbon 2 and 3.
by Vandan_Patel_3L
Sun Mar 05, 2017 9:35 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7752
Views: 1071235

Re: Post All Chemistry Jokes Here

Why did the electron want to go to the party?

Because it was excited
by Vandan_Patel_3L
Sat Feb 25, 2017 2:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7752
Views: 1071235

Re: Post All Chemistry Jokes Here

What's wrong with a joke involving Cobalt, Radon, and Ytterium?
its CoRnY
by Vandan_Patel_3L
Wed Feb 15, 2017 5:36 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Quiz Prep 1, #8
Replies: 3
Views: 337

Re: Quiz Prep 1, #8

For this question, you do not need to calculate any numbers. It is mainly asking for which of the following are state functions. You can get this from the question as it states that the temperature returns back to its original 298K, the volume returns back to V initial and the pressure returns back ...
by Vandan_Patel_3L
Fri Feb 10, 2017 12:54 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: Qualitative ways to find Entropy
Replies: 3
Views: 419

Re: Qualitative ways to find Entropy

You can also look at them through their structure and the statistical entropy for each through their degeneracy. This can be done by imagining that the molecules are cooled to 0K and seeing how many ways they can be at 0K to find their degeneracy.
by Vandan_Patel_3L
Fri Feb 03, 2017 5:48 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Electrolysis Application
Replies: 2
Views: 460

Re: Electrolysis Application

A real life example of electrolysis would be electroplating objects with chromium, nickel or gold jewelry.
by Vandan_Patel_3L
Fri Jan 27, 2017 10:30 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs Free Energy at during Phase Change
Replies: 1
Views: 294

Gibbs Free Energy at during Phase Change

The textbook mentions: "The Gibbs free energy of 1 mol H2O(l) must be the same as the Gibbs free energy of 1 mol H2O(s)." What is the reasoning behind this as the enthalpy for water is different as solid water and liquid water. Shouldn't this enthalpy difference correlate to a difference i...
by Vandan_Patel_3L
Sun Jan 22, 2017 12:42 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Textbook Problem 8.21
Replies: 2
Views: 343

Textbook Problem 8.21

I was wondering how to start this problem and if I do two separate equations for water and copper. A piece of copper of mass 20.0 g at 100.0 C is placed in a vessel of negligible heat capacity but containing 50.7 g of water at 22.0 C. Calculate the final temperature of the water. Assume that no ener...
by Vandan_Patel_3L
Mon Jan 16, 2017 6:14 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: By or On the System? [ENDORSED]
Replies: 4
Views: 497

Re: By or On the System? [ENDORSED]

Work is either done ON the system by a force and thus the system would gain energy and if work is done BY the system it would lose energy and thus the internal energy of the system can be increased or decreased based on a net gain or net loss.

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