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chemistry moles help please ?

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aiyla:
thanks aalot ... thats the way i wanted it ..

but in the end u multiplied by 242 instead of 424



<3

nid404:

--- Quote from: aiyla on October 25, 2009, 05:08:20 pm ---thanks aalot ... thats the way i wanted it ..

but in the end u multiplied by 242 instead of 424



<3

--- End quote ---

oh im sorry abt that...haste leads to waste...I'll edit my post

aiyla:
how did u convert 6 millimolar to 0.006 mol/dm3

i dont get that part ):

aiyla:
i got the first part ,, but here this in the second one

0.006X424g/dm3

why did we multiply instead of divide ? 
to find g/dm^3  isnt it  .. mass of solute/volume of solution  ????

nid404:

--- Quote from: aiyla on October 25, 2009, 05:48:47 pm ---i got the first part ,, but here this in the second one

0.006X424g/dm3

why did we multiply instead of divide ? 
to find g/dm^3  isnt it  .. mass of solute/volume of solution  ????

--- End quote ---

we r simply converting moles to gms. so u just multiply the moles by the mass of 1 mole.

mass= no.of moles X molar mass

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