Qualification > Sciences

CHEM AND BIO HELP AND TIPS HERE

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Raywin:

--- Quote from: MasterMath on June 06, 2010, 04:57:07 pm ---take this reaction for example:
    2N2     +      3H2   -----> 2NH3
          56g                            6g                         34g
Now you can use this for example if they tell you we gave you 5.6g of nitrogen.. how many grams will be produced of hydrogen
Then you can do this
      56              6
      5.6             x
then find X by .. (5.6*6)/56
The same can be done
If you change it
The mole ratio is simply the co-officent of the reactants and products
        2                                        3                             2
just follow the same if they give you a specific amount of moles of reactant/product!

--- End quote ---

Thanks a lot.. ;D

elemis:

--- Quote from: Kimo Jesus on June 06, 2010, 05:07:07 pm ---my headphones almost blew my ears there ! thanks ari =.=  :P :P

--- End quote ---

LOL ! Okay, your welcome.  The Lion exists to serve and protect his domain.  ;)

I'm always watching.

igext:
what conditions of rxns do we need to know other than contact and haber processes?
especially organic equations (e.g.cracking and polymerisation) do we need to know conditions for these?

Dana:

--- Quote from: The Hitman on June 06, 2010, 04:57:51 pm ---Yo, I needed to ask, why does water act as a base when Sulphuric Acid dissolves in it?

--- End quote ---
cuz it accepts a proton!! (H+) WOO :P

8T:

--- Quote from: 8T on June 06, 2010, 04:59:50 pm ---Could someone please explain may june 09 paper 32 q 5 b
I know it's for instance K3PO4 or T3 PO4.. but the other 2 marks not quite so any help??

--- End quote ---
Could someone pleaaaaaaaase answer i quoted above ? :S??

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