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05-12-2005, 11:01 PM
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#61 | | Member
Join Date: Apr 2005 Location: PKT
Threads: 45
Posts: 971
| ebonytear said: "Wait, no...I got like 7, 6, and 2."
Yup. That's what I got. You're right
C7H6O2 - taht's the molecular AND empirical. Pwned.
And both WERE 122.
7(12)+6+2(16)=122
We're right...everyone else is wrong. Take that, byotches! W000t. | 
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05-13-2005, 01:01 AM
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#62 | | | Yeah, I got 7,6, and 2. And [Al(OH)4]- is correct, it's an exception to the rule that the number of ligands is generally a multiple of the charge of the cation. Our chem teacher made sure we knew that one. | |
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05-13-2005, 02:26 AM
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#63 | | | i did 6.1 x 10^ 2 also because of sig figs. (For K... don't know which problem that was)
for the 1st acid base equilibrium...
i think i got a pretty high concentration for something... like 14Mish.. for something??
and [H+] was liek 5.5 x something? i dont' remember.. :S
I'm pretty sure i got a 5 though. | |
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05-13-2005, 02:35 AM
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#64 | | Member
Join Date: Apr 2005
Threads: 28
Posts: 937
| Spartan Pho3nix + ieatglue: YAY! I feel so much better now. Glad to know some people agree with me! I thought it was totally off b/c everyone else had such diff. answers.  | |
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05-13-2005, 10:16 AM
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#65 | | Member
Join Date: Aug 2004 Location: NJ, USA
Threads: 27
Posts: 501
| ohh!! I got the exact same value of Ka for methanoic acid on the test, which means I did the whole equilibrium FR correct!!!!!!! WOOHOO!!! | |
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05-13-2005, 01:45 PM
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#66 | | Junior Member
Join Date: Dec 2004 Location: Detroit, the home of the Pistons, gaz-guzzling cars, and Motown
Threads: 32
Posts: 282
| Or it just means you did the last two parts right... | |
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05-13-2005, 03:49 PM
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#67 | | Member
Join Date: Aug 2004 Location: NJ, USA
Threads: 27
Posts: 501
| bah! lol nah, i got the first two parts right too! | |
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05-13-2005, 04:16 PM
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#68 | | Member
Join Date: Mar 2005 Location: MN Until August. Duke After.
Threads: 18
Posts: 908
| Hey, does anybody know how many points Solubility (the one with the three solutions), Flame test (wooden stick), and the section with formal charge will be worth, approxiamately?
Just the individual parts, not the whole problems...
Thanks. | |
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05-13-2005, 04:19 PM
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#69 | | Member
Join Date: Aug 2004 Location: NJ, USA
Threads: 27
Posts: 501
| splints is probably 1 point each, solubility part probably 3-4 points total, and the formal charge thing is probably 2 points | |
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05-13-2005, 04:19 PM
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#70 | | Member
Join Date: Dec 2004 Location: FL - yes i know it sucks here
Threads: 30
Posts: 649
| I already said the answers for the flame tests:
Flame tests:
1. N2 - Flame is turned down. Sometimes there is brown fumes coming out.
2.H2 - Small combustion with a "pop" sound
3.O2- flame rekindles. | |
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05-13-2005, 05:23 PM
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#71 | | Junior Member
Join Date: May 2005 Location: San Antonio
Threads: 2
Posts: 71
| hehe you can thank my chem teacher for FR #1, I was wondering why the format felt similar... Go good teachers. | |
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05-13-2005, 07:24 PM
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#72 | | Member
Join Date: Apr 2005
Threads: 54
Posts: 490
| I got my FR question booklet back. Did ur teachers hand back ur booklets too? | |
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05-13-2005, 08:17 PM
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#73 | | Member
Join Date: Apr 2005
Threads: 118
Posts: 551
| are the questions posted on collegeboard yet? | |
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05-14-2005, 09:52 AM
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#74 | | Member
Join Date: Mar 2005 Location: Chapel Hill, NC
Threads: 96
Posts: 777
| yes.. they are posted up | |
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05-14-2005, 10:58 AM
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#75 | | Junior Member
Join Date: Aug 2004
Threads: 3
Posts: 56
| The empirical formula was C7H6O2.
The molecule is benzene with a carboxyl functional group (COOH) attached. The molecular mass was about 121-122. | |
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