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CHEM AND BIO HELP AND TIPS HERE

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Helium:

--- Quote from: ~VIN1094~ on June 06, 2010, 01:13:43 pm ---yet another..

--- End quote ---

Thanks dude..

so i can just draw it like                   
                      o
                       l
                   o-Ge-o
                       l
                       o

rhea:
QUESTIIIOON!!

balance the ionic equation By the way scandium fluoride and calcium:-

...Ca+...Sc3+  -->  ...Ca2+ +...Sc

WARRIOR:

--- Quote from: rhea on June 06, 2010, 02:04:29 pm ---QUESTIIIOON!!

balance the ionic equation By the way scandium fluoride and calcium:-

...Ca+...Sc3+  -->  ...Ca2+ +...Sc



--- End quote ---
3..Ca+.2..Sc3+  -->  3...Ca2+ +.2..Sc


there has to be same maount of electrons on each side , therefore we make it 6 -->6

Raywin:
Guys, a silly doubt :P Whats the difference between Heat, Roast and burn in air.. ??? Thanks.

MasterMath:

--- Quote from: Kimo Jesus on June 06, 2010, 02:08:21 pm ---3..Ca+.2..Sc3+  -->  3...Ca2+ +.2..Sc


there has to be same maount of electrons on each side , therefore we make it 6 -->6

--- End quote ---
The polymer formed by HO-CH2CH2-OH and
HOOC-C6H4-COOH shouldnt it be OC-C6H4-COO-CH2CH2-O ?
The alcohol looses H and the acid looses - OH
The MS says :
-OOC-C6H4-COOCH2CH2O- =_="
Where did the first extra O come from >_> or its just a part of the last monomer?

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