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Chemistry'10 paper 3. PLEASE HELP IF YOU CAN :-[

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Liya:
can someone list the name of those -ene?
if i'm not wrong, it depends on how many carbon(s) did they have, doesn't it?

and what are the difference between alkene(methene,buthene,etc), alkane (methane,buthane,etc), alcohol (methanol, etc), and others (i forget the rest)?

mohit1234:

--- Quote from: Liya on June 05, 2010, 12:48:11 pm ---can someone list the name of those -ene?
if i'm not wrong, it depends on how many carbon(s) did they have, doesn't it?

and what are the difference between alkene(methene,buthene,etc), alkane (methane,buthane,etc), alcohol (methanol, etc), and others (i forget the rest)?

--- End quote ---

ethene    C2H4
propene    C3H6
butene    C4H8
pentene  C5H10
Hexene   C6H12
Septene  C7H14
Octene   C8H16

theres no methene cos CH2 cannot exist

alkenes have a double bond
alkanes dont hve a double bond

Alkanes formula - CnH2n+2
Alkenes formula - CnH2n
Alcohols formula - CnH2n+1OH
Carboxylic Acids formula - CnH2n+1COOH

Anything else??

Liya:
thank you!! :D

Helium:
NEVER MIND

mohit1234:

--- Quote from: Helium on June 05, 2010, 04:09:04 pm ---No one answered lulu's question.

I'll look into it :D



--- End quote ---

i think someone did
look here


--- Quote from: Adham-amr on June 05, 2010, 09:49:23 am ---if the electrolyte is molten it's used up e.g molten lead bromide Pb+ at cathode and Br- at anode
if aqueous or dilute they're both the same they have the same but extra two ions
e.g aqueous or dilute sodium chloride they have Na+ Cl- and H+ OH- from water

--- End quote ---

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