Search found 17 matches
- Sun Mar 06, 2016 7:59 pm
- Forum: *Free Energy of Activation vs Activation Energy
- Topic: Activated Complex Theory
- Replies: 1
- Views: 723
Activated Complex Theory
What is the activated complex theory?
- Sun Mar 06, 2016 7:48 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2998830
Re: Chemistry Jokes
Why do most chemists learn about ammonia first?
It's pretty basic stuff
It's pretty basic stuff
- Sun Feb 28, 2016 9:12 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2998830
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.
- Sun Feb 21, 2016 7:58 pm
- Forum: Zero Order Reactions
- Topic: Zero order
- Replies: 5
- Views: 1225
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.
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.
- Sat Feb 13, 2016 12:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2998830
Re: Chemistry Jokes
The last time I told a good chemistry joke, there was no reaction
- Sat Feb 06, 2016 2:31 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2998830
Re: Chemistry Jokes
What did the angry electron say when it was repelled?
Let me atom!!
Let me atom!!
- Sun Jan 31, 2016 10:58 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Assume 298K when not given?
- Replies: 1
- Views: 478
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.
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.
- 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: 1030
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...
- Sun Jan 17, 2016 6:24 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Water Evaporation Explanation
- Replies: 1
- Views: 547
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 ...
- Mon Jan 11, 2016 10:19 am
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Definition of a Quasistatic Process?
- Replies: 1
- Views: 2299
Definition of a Quasistatic Process?
What is the definition of a quasi-static process and how is it different from a reversible reaction?
- Sun Nov 29, 2015 11:10 pm
- Forum: Lewis Acids & Bases
- Topic: (am) state
- Replies: 1
- Views: 533
(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?
- Sun Nov 22, 2015 2:44 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: electron configurations and bond orders
- Replies: 3
- Views: 3477
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...
- Wed Nov 11, 2015 2:32 pm
- Forum: Naming
- Topic: names for anionic ligands
- Replies: 2
- Views: 832
Re: names for anionic ligands
Based on the answers in the textbook, the new IUPAC nomenclature has been used.
- Sun Oct 25, 2015 4:26 pm
- Forum: Resonance Structures
- Topic: Resonance structure of five N atoms
- Replies: 2
- Views: 1381
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...
- Sun Oct 18, 2015 3:01 pm
- Forum: Octet Exceptions
- Topic: Determining which elements are octet exceptions
- Replies: 4
- Views: 2231
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?
- Sun Oct 11, 2015 11:27 am
- Forum: Ionic & Covalent Bonds
- Topic: Valence Shells
- Replies: 3
- Views: 780
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...
- Fri Oct 02, 2015 5:41 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Calcluating the mass from Molality
- Replies: 1
- Views: 693
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 ...