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Chemistry: Post your doubts here!
iridium has two isotopes of mass numbers 191 and 193 and its average relative atomic mass is 192.23. calculate the relative abundances of the two isotopes... can anyone solve it the answers are 61.5%for 193 and 38.5% for 191 well i did get these answers via substitution can anyone solve it by... -
waliakumaslam thanks for the effort but i am an engineering student
waliakumaslam thanks for the effort but i am an engineering student- snowbrood
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A-Levels Equivalence
i got 3bs 3As 2A*s what would be my percentage -
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who need ebooks and notes
ya dont visit the link above it is useless -
Chemistry: Post your doubts here!
i just figured out question 32 well 1moldm^-3 sulphuric acid is dilute dilute sulphuric acid u will consider an ion as high if there are more moles of that ions formed by the dilute acid than the concentrated one . u see from this equation that 2 moles of H+ ions are formed which are greater... -
Chemistry: Post your doubts here!
lol its so funny i am ur junior and havent studied anything except organic sec in AS Level yet i am able to answer -
Chemistry: Post your doubts here!
what is that troubles u.. any part of this which u cant understand well one. Step 1 u have to first balance a equation for anhydrous nitrate which has a metal ion from group 2 . X here is the metal from group 2 as this is anhydrous so no water vapor will be released (2XNO3)2(s) = 2XO(s) +... -
Chemistry: Post your doubts here!
well u got to know that inflammable is the inability to burn. oxygen dont burn itself it just accelerates combustion. flammable means a reaction in which oxygen combines with the substance that is flammable how can oxygen combine with itself hope that makes sense... for Q14 well balance... -
redspot or classified past papers
ok classified but which one there are many of classified past papers in market the one that is in shaikh currently is in a very bad print quality so could u suggest me the name of the author or publisher -
who need ebooks and notes
actually i tried to upload it here but couldnt do so i went to mediafire -
who need ebooks and notes
http://www.mediafire.com/?7h7nq4bovopxn28 there u go as promised i have uploaded the notes to mediafire here is the link -
Is Physics 1000 MCQ'S are useful?
u dont use are after u have used is -
redspot or classified past papers
guys can anyone suggest me as to which past papers should i buy for a level chem phys and maths -
who need ebooks and notes
well i cant upload a file of 17mb i.e understanding mechanics whats wrong with xtreme help people -
who need ebooks and notes
i mean i will share the link incase if the link doesnt works i will upload the file understanding mechanics is the book that u wont find anywhere in the internet so i will upload the book whatsay -
who need ebooks and notes
well visit my link http://iearn123.com/ref.php?page=act/ref&invcod=89011 and for every 3 visit i get i will upload a ebook i have understanding mechanics understanding pure mathematics one more mechanics book chemistry notes and ebook and many more just visit the link thats all -
Which is Easier Mechanics 1 or Statistics 1 for AS Level Maths?
it depends where ur interest lies well statisitics is generally considered easy as it is -
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Chemistry: Post your doubts here!
what is the difference between R-MgBr and R"MgBr my book says that R-MgBr reacts with R2CO then H+ and forms R3COOH but when the same R2CO then H+ reacts with R"MgBr it forms R-OH