Qualification > Sciences
Help in AS Chemistry!
unknown 101:
--- Quote from: The SMA on May 21, 2010, 02:42:01 pm ---Many many thanks unknown 101 for enlightening all my doubts. Reaaaaaly Appreciate it :) :)
--- End quote ---
anytime! ;)
The SMA:
Guys need some help in answering Chemistry Paper2 O/N 2005
Q 2 (a) (d)
Q 3 (b ii) can u please show me how to do the cycle for this please?
Thanks!
unknown 101:
--- Quote from: The SMA on May 24, 2010, 11:19:32 pm ---Guys need some help in answering Chemistry Paper2 O/N 2005
Q 2 (a) (d)
Q 3 (b ii) can u please show me how to do the cycle for this please?
Thanks!
--- End quote ---
hope this helped... :)
but for question 3 b) ii) i dont get wat u mean!!!???
The SMA:
Thank you very much for the scan, it is very helpful! i finally understand now :)
oh n i what i meant for the cycle was for Q2 which you already did, sorry for the mistake.
I just want the explainnation on how to answer the Q3 (b ii).
unknown 101:
--- Quote from: The SMA on May 25, 2010, 10:50:37 am ---Thank you very much for the scan, it is very helpful! i finally understand now :)
oh n i what i meant for the cycle was for Q2 which you already did, sorry for the mistake.
I just want the explainnation on how to answer the Q3 (b ii).
--- End quote ---
anytime ;)
ok so for Q.3)b)ii), ur are suppose to answer it based on ur knowledge of fertilisers from O LEVEL BIOLOGY !!! :S
so from what i know:
if excess ammonium nitrate gets washed into a stream or river, it will cause the water plants to grow uncontrolabley ( eutrophication ), causing them to block sun light entering the river, causing many underwater plants to die ( no photosynethesis ). Furthermore it causes the plants to use all its resources ( food ) for growth and so the plant eventually dies as there is no resources left! this causes the decomposers to act on the dead plants, which requires oxygen, soo its being used up, so other water animals dont have enough oxygen to survive and they die.
hope this helped :)
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