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Undergraduate General Chemistry Forum | Forum profile

Forum profile page for Undergraduate General Chemistry Forum on http://www.chemicalforums.com. This report page is the aggregated overview from a single forum: Undergraduate General Chemistry Forum, located on the Message Board at http://www.chemicalforums.com. This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period. Additional forum profile information for "Undergraduate General Chemistry Forum" on the Message Board at http://www.chemicalforums.com is also shown in the following ways:

1) Latest Active Threads
2) Hot Threads for Last Week

Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.

Site: Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help - Undergraduate General Chemistry Forum (site profile, domain info chemicalforums.com)
Title: Undergraduate General Chemistry Forum
Url: http://www.chemicalforums.com/index.php?board=2.0
Users activity: 25 posts per thread
Forum activity: 130 active threads during last week
 

Posting activity on Undergraduate General Chemistry Forum:

  Week Month 3 Months
Threads: 130 392 968
Post: 358 985 2,450
 

Undergraduate General Chemistry Forum Posting activity graph:

Posts by:  day  week  month 

Top authors during last week:

Name
Posts
Borek
84
user's latest post:
Net Ionic Equations - Questions
Published (2009-11-24 20:58:00)
Quote from: brotherseerko on Yesterday at 07:09:07 PM Actually the Net Ionic Equation should be: Ag+    +   NO3-   =AgCl(s) No. Correct equation has been listed in the post. Reviving 5 years old threads is called necromancy.
jakfak
15
user's latest post:
Potassium nitrate from calcium...
Published (2009-11-24 03:49:00)
Quote from: Borek on Today at 03:02:43 AM I like the idea of using finely grinded potassium sulfate in not enough water, no idea what will be the outcome. But I doubt calcium sulfate would be tight enough to not allow water getting inside of the CaSO 4 covered crystals - so intuition tells me the process should continue till all potassium is in the solution. I can be wrong. Thanks again, Borek, I will give it a try. I will use excess water...
bioguy2
14
user's latest post:
stumped on a homework problem
Published (2009-11-15 19:57:00)
i was wondering if any one could help me out on this problem, i cannot figure it out.  determine the [NH3] when HH4HCOO- (s) is dissolved in water.  the Ksp is 1.00. the pH is fixed at 10.00.  thanks, Taylor
Roderick
12
user's latest post:
Molarity of NaOH at "end...
Published (2009-11-23 11:05:00)
I understand that. As I stated in a previous post: Quote from: Roderick on Today at 08:20:54 AM I am trying to solve this by using an ICE table with [H + ] equilib =10 -4.88 which would also be the same as [A - ] Ultimately all of this is to get the [CsHA] to determine Ka. I know I need [CsHA], but don't know how to get it... hence the reason I am even here posting this. I am not here to quiz you and see if you can get it.  I...
sjb
11
user's latest post:
Preparation of a Solution
Published (2009-11-23 06:48:00)
How many ml of a 1M solution of acid do you need to take to make 500 ml of a 5.2 mM solution?
The Cancer Curer
10
user's latest post:
Practice?
Published (2009-11-23 11:27:00)
You can always buy the "AP Exam Preparation" books. This would probably provide you more than enough practice to ace the test. Also, throughout your textbook, you can work out the multiple problems listed.
sam12103
9
user's latest post:
Help please with Bond Polarity...
Published (2009-11-20 11:30:00)
Help please with Bond Polarity problem 27. For each pair of bonds, indicate the more polar bond a.C-O and C-N b. P-Br and P-Cl c.B-O and B-S d.B-F and B-I answer in back of book a. C-O > C-N b. P-Cl> P-Br c. B-O> B-S  Please explain to me how they came up with these answers, I am very confused
klumba
9
user's latest post:
hi, another question
Published (2009-11-22 04:57:00)
ooooooooooooh, i got it now! thank you!!!
renge ishyo
9
user's latest post:
orbitals
Published (2009-11-22 08:35:00)
Degenerate orbitals means that the orbitals all appear at the same energy level. For example, in the Hydrogen atom the three 2p orbitals are degenerate because they all appear at the same energy level. Hence an electron can go into any of the three orbitals it chooses given that certain quantity of energy. However, for polyelectron atoms differences in energy levels can appear so that the 2p-orbitals are not all of the same energy (this is due...
hunter457
9
user's latest post:
Enthalpy of a Reaction
Published (2009-11-23 16:52:00)
Wasn't 0.19mL consumed by the reaction? I'm confused.
 

Latest active threads on Undergraduate General Chemistry Forum::

Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 17 hours, 29 minutes ago (2009-11-26 03:05:00)  by AWK
http://en.wikipedia.org/wiki/Table_of_standard_ele ctrode_potentials
Thread:  Show this thread (2 posts)   Thread info: Which reagent is a more effective reducing agent? Size: 167 bytes
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Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 1 day ago (2009-11-25 20:24:00)  by AWK
Show some work!
Thread:  Show this thread (4 posts)   Thread info: What are the redox reactions that take place when i mix these reagentstogether? Size: 15 bytes
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Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 3 days, 1 hour ago (2009-11-23 19:33:00)  by AWK
You should do stoichiometry of complex formation before calculation of ammonia concnetration.
Thread:  Show this thread (3 posts)   Thread info: concentration Size: 93 bytes
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Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 23 hours, 30 minutes ago (2009-11-25 21:04:00)  by Borek
Please read forum rules . Don't cross post. Topic locked.
Thread:  Show this thread (2 posts)   Thread info: 2 Questions Left! Size: 182 bytes
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Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 23 hours, 48 minutes ago (2009-11-25 20:46:00)  by AWK
At least you also should know a total concentration of acid. See http://www.chem.usu.edu/~sbialkow/Classes/3600/alp ha/alpha1.html
Thread:  Show this thread (2 posts)   Thread info: calculate phases of diprotic acid given only the eq. constants? Size: 232 bytes
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Started 2 days, 13 hours ago (2009-11-24 07:34:00)  by FeLiXe
you could consider atom radii and electronegativities
Thread:  Show this thread (3 posts)   Thread info: S=S and P=P non-existence Size: 53 bytes
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Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 1 day, 8 hours ago (2009-11-25 11:42:00)  by renge ishyo
Quote Why are lone pairs more repulsive than the electron pairs in the above example? I tried reading explanations on Wikipedia and my textbook, but I can't seem to grasp either one. Could someone try explaining it to me? Lone pairs are more repulsive than the electrons involved in bonds because the lone pairs are only pulled towards the centeral atom whereas the electrons involved in bonds ...
Thread:  Show this thread (2 posts)   Thread info: Lone pair VSEPR geometry and finding hybridisation Size: 2,527 bytes
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Started 2 days, 1 hour ago (2009-11-24 19:19:00)  by gregdwulet
http://en.wikipedia.org/wiki/Hess%27s_law Scroll down to the "Extension to entropy and free energy" section. This is the most help we can give for questions as vague as this.
Thread:  Show this thread (4 posts)   Thread info: find Delta G Size: 284 bytes
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Chemical Forums: Chemistry Forum, Chemistry Question, Chemistry Help
Started 1 day, 18 hours ago (2009-11-25 02:09:00)  by typhoon2028
I would have expected a higher ammonia concentration for a fish.
Thread:  Show this thread (4 posts)   Thread info: Excretory Systems of Fish and Earthworm.. Size: 64 bytes
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Started 2 days, 12 hours ago (2009-11-24 07:36:00)  by FeLiXe
first think of what kind of hybridization corresponds to what geometry
Thread:  Show this thread (4 posts)   Thread info: alkaline earth difluoride decreasing bond angle Size: 70 bytes
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Hot threads for last week on Undergraduate General Chemistry Forum::

Undergraduate General Chemistry Forum
Started 3 days, 21 hours ago (2009-11-22 23:24:00)  by Borek
How much water was consumed by the reaction? And read answer here: http://www.chemicalforums.com/index.php?topic=3668 8.0
Thread:  Show this thread (18 posts)   Thread info: Enthalpy of a Reaction Size: 232 bytes
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Undergraduate General Chemistry Forum
Started 1 week, 3 days ago (2009-11-16 01:46:00)  by Borek
What are these numbers? (list values)
Thread:  Show this thread (17 posts)   Thread info: hi, another question Size: 37 bytes
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Undergraduate General Chemistry Forum
Started 3 days, 20 hours ago (2009-11-22 23:58:00)  by Borek
Quote from: Roderick on Yesterday at 05:56:42 PM In calculating the end point it is my understanding that you need [I-]/[HI]=1/10 and setting this to [NaOH]/(3.07x10 -1 ) to solve for [NaOH]. Please eleaborate - I think I know what you are aiming at, but I don't want to guess. Quote I did this and got 3.7x10 -2 M NaOH as the final answer. Is this correct? No, you are not in a correct ...
Thread:  Show this thread (14 posts)   Thread info: Molarity of NaOH at "end point" Size: 876 bytes
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Undergraduate General Chemistry Forum
Started 3 days, 20 hours ago (2009-11-22 23:46:00)  by Borek
0.0297g seems OK. How many moles of acid will you need in the final solution? Assume volume (500 mL) will not change - you will be able to check it later comparing initial volume with the volume acid added (if the latter is much smaller, it can be ignored).
Thread:  Show this thread (10 posts)   Thread info: Preparation of a Solution Size: 270 bytes
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Undergraduate General Chemistry Forum
Started 2 days, 19 hours ago (2009-11-24 01:21:00)  by Borek
Goan read about solubility product
Thread:  Show this thread (10 posts)   Thread info: Potassium nitrate from calcium nitrate and potassium sulfate Size: 126 bytes
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Undergraduate General Chemistry Forum
Started 2 days, 19 hours ago (2009-11-24 01:19:00)  by Borek
In low pH PO 4 3- gets protonated.
Thread:  Show this thread (8 posts)   Thread info: Solubility of phosphates Size: 58 bytes
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Undergraduate General Chemistry Forum
Started 6 days, 9 hours ago (2009-11-20 11:21:00)  by sjb
What is the definition of a pure covalent bond?
Thread:  Show this thread (7 posts)   Thread info: electronegativity Size: 47 bytes
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Undergraduate General Chemistry Forum
Started 1 week ago (2009-11-19 16:24:00)  by The Cancer Curer
I wouldn't ask "How much is your salary," that is pretty personal along with "how much is your max salary in the future" and "how many years do you need to reach for max salaries" and "how much was your starting salary." I would stick to asking something like, "what pathway did you take to reach your current position (what degree do you have, did you shadow people for experience, etc)?" or ...
Thread:  Show this thread (6 posts)   Thread info: i need help with an interview with an chemical engineer Size: 802 bytes
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Undergraduate General Chemistry Forum
Started 1 week ago (2009-11-19 15:30:00)  by The Cancer Curer
Are you sure this is all of the reaction?...It appears that a reactant is missing - the hydrogen.
Thread:  Show this thread (5 posts)   Thread info: Stuck on this redox question: Size: 207 bytes
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Undergraduate General Chemistry Forum
Started 1 week ago (2009-11-18 22:15:00)  by Borek
Quote from: Shaun1979 on Yesterday at 09:52:04 PM I found this on the internet as answers: 2Cu + O2 = CuO (Copper (II) Oxide) OR 4Cu + O2 = Cu2O (Copper (I) Oxide) Don't believe everything on interenet - neither of these reactions is correctly balanced.
Thread:  Show this thread (5 posts)   Thread info: Balancing equations Size: 440 bytes
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