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Author Topic: NO 1 IS GETTIN IT !!!!!!!!!!  (Read 715 times)

Offline sweetie

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NO 1 IS GETTIN IT !!!!!!!!!!
« on: April 12, 2010, 05:12:03 pm »
I ASKED MY TUTOR , AS WELL AS MANY OTHER PPL, BUT THEY'RE ALL GETTING DA ANS. TO Q2 OF THIS PAPER as  0.05 , SO IF ANY1 HAS GOT AN  XPLAINATION 4 WHY IS 0.03 THE CORRECT ANSWER PLZ POST IT !!!!

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Amr Fouad

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Re: NO 1 IS GETTIN IT !!!!!!!!!!
« Reply #1 on: April 12, 2010, 05:24:14 pm »
you should ask nid..

shes the best in shemistry
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Amr Fouad

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Re: NO 1 IS GETTIN IT !!!!!!!!!!
« Reply #2 on: April 12, 2010, 05:24:39 pm »
chemistry* lol
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Offline sweetie

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Re: NO 1 IS GETTIN IT !!!!!!!!!!
« Reply #3 on: April 12, 2010, 05:28:53 pm »
ya, i kno
nid plzzz help!!!!!!!!!!!!!
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Offline Phosu

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Re: NO 1 IS GETTIN IT !!!!!!!!!!
« Reply #4 on: April 12, 2010, 05:42:34 pm »
ok
so there is 15g of N in 100g of fertilizer, so 14g of fertilizer will contain how many g of N
 N           fertilizer
15            100
x                14     x= 2.1g

n=cv, we have the volume but to find the conc we need moles
so number of moles in 2.1g of nitrogen, n=2.1/14 = 0.15 moles

now u can use the formula
c=n/v  c=0.15/5 = 0.03 mol/dm3
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