Search found 17 matches

by Vishal Dobaria 4G
Sun Mar 06, 2016 7:59 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Activated Complex Theory
Replies: 1
Views: 467

Activated Complex Theory

What is the activated complex theory?
by Vishal Dobaria 4G
Sun Mar 06, 2016 7:48 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213835

Re: Chemistry Jokes

Why do most chemists learn about ammonia first?


It's pretty basic stuff
by Vishal Dobaria 4G
Sun Feb 28, 2016 9:12 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213835

Re: Chemistry Jokes

Two men walk into a bar. One of them orders H20. The second man says, "I'll have H20 too". The second man dies.
by Vishal Dobaria 4G
Sun Feb 21, 2016 7:58 pm
Forum: Zero Order Reactions
Topic: Zero order
Replies: 5
Views: 754

Re: Zero order

Hello,
If there is a reactant that has a zero order, it would not have an effect on the overall order. You would essentially neglect it and add a 0 when you were summing up the orders of the reaction.
by Vishal Dobaria 4G
Sat Feb 13, 2016 12:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213835

Re: Chemistry Jokes

The last time I told a good chemistry joke, there was no reaction
by Vishal Dobaria 4G
Sat Feb 06, 2016 2:31 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213835

Re: Chemistry Jokes

What did the angry electron say when it was repelled?

Let me atom!!
by Vishal Dobaria 4G
Sun Jan 31, 2016 10:58 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Assume 298K when not given?
Replies: 1
Views: 262

Re: Assume 298K when not given?

Hi,
Because we are given a delta H without a specific temperature, I believe that it is safe to assume that we could use the standard room temperature, but I am not sure that it is the real reason we would use it.
by Vishal Dobaria 4G
Sun Jan 24, 2016 5:59 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Quiz 1 Preparation Winter 2015 #3
Replies: 4
Views: 731

Re: Quiz 1 Preparation Winter 2015 #3

I believe that the question you are referring to, (#3 in Winter 2015 Practice Quiz) asks you to find the w, q and delta U rather than delta H. As you stated, we can find the amount of work done by the system from the equation of w=-nRTln(V2/v1). However, the change in internal energy (delta U) would...
by Vishal Dobaria 4G
Sun Jan 17, 2016 6:24 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Water Evaporation Explanation
Replies: 1
Views: 335

Water Evaporation Explanation

From a thermodynamics perspective, could someone explain how water gains energy to evaporate, even at room temperature? Even without energy from a light source, water can evaporate. I assume it would have to do with gas molecules interacting with the surface of the water, possibly giving it kinetic ...
by Vishal Dobaria 4G
Mon Jan 11, 2016 10:19 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Definition of a Quasistatic Process?
Replies: 1
Views: 1561

Definition of a Quasistatic Process?

What is the definition of a quasi-static process and how is it different from a reversible reaction?
by Vishal Dobaria 4G
Sun Nov 29, 2015 11:10 pm
Forum: Lewis Acids & Bases
Topic: (am) state
Replies: 1
Views: 362

(am) state

In an example that I came across the reaction had the notion (am) after acetic acid: CH3COOH (am). What does the am stand for?
by Vishal Dobaria 4G
Sun Nov 22, 2015 2:44 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: electron configurations and bond orders
Replies: 3
Views: 2831

Re: electron configurations and bond orders

For B2: The bond order is 1/2(4-2)=2 And the valence electron configuration is (2 \sigma s) 2 (2 \sigma [*]s) 2 (2 \pi [*]s) 2 For Be2: The bond order is 1/2(2-2)=0 And the valence electron configuration is (2 \sigma s) 2 (2 \sigma [*]s) 2 For F2: The bond order is 1/2(8-6)=2 And the valence electro...
by Vishal Dobaria 4G
Wed Nov 11, 2015 2:32 pm
Forum: Naming
Topic: names for anionic ligands
Replies: 2
Views: 534

Re: names for anionic ligands

Based on the answers in the textbook, the new IUPAC nomenclature has been used.
by Vishal Dobaria 4G
Sun Oct 25, 2015 4:26 pm
Forum: Resonance Structures
Topic: Resonance structure of five N atoms
Replies: 2
Views: 993

Re: Resonance structure of five N atoms

Hello, I was under the impression that the “most important” Lewis structure, needed to have symmetry in terms of the bonds as well as maintaining the symmetry in formal charge. This would occur when the two outer Nitrogen atoms would have triple bonds with the inner Nitrogen atoms and the middle ato...
by Vishal Dobaria 4G
Sun Oct 18, 2015 3:01 pm
Forum: Octet Exceptions
Topic: Determining which elements are octet exceptions
Replies: 4
Views: 1426

Re: Determining which elements are octet exceptions

Does that mean an element in the 4p orbital, such as Arsenic or Selenium, could potentially be exceptions to the octet rule and access the 4d and/or the 4f orbital?
by Vishal Dobaria 4G
Sun Oct 11, 2015 11:27 am
Forum: Ionic & Covalent Bonds
Topic: Valence Shells
Replies: 3
Views: 469

Valence Shells

Most of the elements in the first two Groups have a tendency to lose electrons in order to have a full valence electron shell and follow the octet rule. For example, Lithium tends to lose an electron in a reaction. Is it possible for elements such as Lithium to gain electrons and achieve a full vale...
by Vishal Dobaria 4G
Fri Oct 02, 2015 5:41 pm
Forum: Molarity, Solutions, Dilutions
Topic: Calcluating the mass from Molality
Replies: 1
Views: 457

Calcluating the mass from Molality

The antibiotic tetracycline has formula C22H24N2O8. Safe dosage of the drug is .24 (mirco)mol/kg/day. If the child weighing 45 lb is administered tetracycline in four equally divided doses per day, what mass of tetracycline should be present in each dose? I understand that in order to determine the ...

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