Qualification > Sciences
IG Chemistry Paper 3 discussion
a7medokool:
Hey guys for the empircal formula Question
u dividde the percentage by the RMM right i got 1.5 for mg i dont remember for the other element but if u get 1.5 is it times both by 2?
sweetie:
oh
i got Mg3N2
by da way, which was in excess?
and wa was the no. of moles??????
IGCSE nightmare:
What makes you so sure ?!?
By the way I wrote that too but many are saying it's T3PO4
qwert101:
--- Quote from: SnEaKrzzz NyTe...... on June 02, 2009, 09:31:09 am ---
--- Quote from: ~M.J~ on June 02, 2009, 09:26:26 am ---I am so curious to find out the answers so pls answer my following questions:
1 What was the formulae of the metal T?n how to do that
2 What will be (needed to produce/produced by the hydrolysis) of the ester
(where the 2 blanks were given)
3 What was the test to show that both lactic acid and acrylic acid contained the COOH group
I hope i'll get the answers soon
Thanx.
--- End quote ---
1. T3(PO4)2
2. i wrote Alkyl n alcohol
3. litmus ppr. turns BLUE litmus RED
--- End quote ---
litmus is an indicator ;)
zara:
Fluorine was in excess and silicon was the limitin reagent....
0.08 was the no of moles....cz the product is the same as dat of the limitin agent...dats wat i read in the txt bk...
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