Thankyou so much princessanum!
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ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)
- Thread starter Sherry Berry
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Sorry if em bugging u :\
but can u explain the second part again?(wen water is added?)
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umm..what's wrong?
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Assalam-o-alaikum wr wb..sorry for the late reply,i was away....
the steps are:
Na+OH- + NH4 Cl- =Na+Cl- + H2O
OH- (aq) + NH4Cl (s) ---> Cl- (aq) + H2O (l) + NH3 (g)
Jazakallah Khair...May Allah reward you
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np...thx but y we dont split nh4cl?sorry for the late reply,i was away....
the steps are:
Na+OH- + NH4 Cl- =Na+Cl- + H2O
OH- (aq) + NH4Cl (s) ---> Cl- (aq) + H2O (l) + NH3 (g)
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svenas and all others i need to go right now...i will be back soon Inshallah! there are a lot of new posts in this thread...so i think i missed some of your questions..if i did, i am sorry! quote me again and i will reply Inshallah...if i still miss, then you may pm me!
May I ask if u have the markschemes for 2000-2001-2002 for both June and November for Chemistryy ?
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I spitted it first and then wrote it as the same thing again as it has form ammonia and Cl present in it has been taken by Na
Hope u got it
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aha
aha ya I got it thx!I spitted it first and then wrote it as the same thing again as it has form ammonia and Cl present in it has been taken by Na
Hope u got it
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ok bye..hv nyc time!
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you are my herooo.. thanks agaain !!
- Messages
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ur welcome!
- Messages
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- Reaction score
- 10,974
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- 698
- Messages
- 1,210
- Reaction score
- 10,974
- Points
- 698
Assalam-o-alaikum wr wb...
incase those links aren't working (bcoz usually they don't)....you may check these..
i posted it here
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can u plz help me urgently in thus q21 nov 1998 chemAssalam-o-alaikum wr wb...
incase those links aren't working (bcoz usually they don't)....you may check these..
i posted it here
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Assalam-o-alaikum wr wb..
I also had a doubt in that..and someone told me it's may be bcoz the mixture is insoluble in water so the gas remains...
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A sure thingit's okie...you seriously don't need to apologize..i am glad if i was of some help
juss remember me in your prayers
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Lots of questions.. this paper:http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w07_qp_1.pdf
Q.7,9,11,24,35
A small explanation please.. I'm terriBAD at chemistry.
Q.7,9,11,24,35
A small explanation please.. I'm terriBAD at chemistry.
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Assalam-o-alaikum wr wb...
Q7) covalent bond is formed when 2 non metals combine..the 2 nonmetals in that case are only X and Y!
Q9) If he adds the first 3 substances, the reaction will not take place bcoz they are insoluble in water..so the only possibility is D as it is soluble.
Q11) You need to write a balanced equation for this reaction...
write for all..and you will know that the answer is B bcoz..
C6H9OH + 8O2 = 6CO2 + 5H2O
it shows that one molecule of the organic compound, needs 8 molecules of Oxygen, so the answer is B!
sorry i don't have time so can't explain the rest 2..seriously sorry!