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Chemistry: Post your doubts here!
hey so Question 6 NH4NO3→ N2O + 2H2O treat NH4+ and NO3- as separate and get the oxidation state on each ..... N in NH4+ has the oxidation state of -3 and in NO3- it has an oxidation state of +5 and since in N2O the oxidation state is 1 you get from -3 to 1 which is +4 and from +5 to +1 is -4... -
Chemistry: Post your doubts here!
here is another one can you help me with it please :) -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w09_qp_11.pdf please help question 21, 23, 28, 29, 31 -
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Chemistry: Post your doubts here!
can you help me with mine too please , thank you in advance -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf please help question 14 and Question 4 and Question 25 and Question 37 please explain as you solve or explain the answer -
Physics IGCSE help!!!
if a variable then it is usually temperature, pressure distance from the mirror or lens there are a lot but if you check the past papers you will see that they repeat if you are smart you will figure out the trend of repeating questions(kind of not exactly the same though) for improvement you...- soso247
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- Forum: O-Levels / GCSEs / IGCSE
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Physics: Post your doubts here!
PHYSICS AS OCTOBER 2010 PAPER 21 HELP :'( Hey guys: Can someone please explain to me how to do question 6 especially part b :'( Thank u so much and good luck with your exams :)