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All the best ^_^Haha Chemical periodicity is my worst nightmare! (So is all of chem tbh )
And Maths P1 tomorrow too... ughh
Thanks though!
For me physical and inorganic part is and organic is
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All the best ^_^Haha Chemical periodicity is my worst nightmare! (So is all of chem tbh )
And Maths P1 tomorrow too... ughh
Thanks though!
Thanks! Haha for me organic is ok ok ... But enthalpy and equilibrium are EPICAll the best ^_^
For me physical and inorganic part is and organic is
Thanks.Haha Chemical periodicity is my worst nightmare! (So is all of chem tbh )
And Maths P1 tomorrow too... ughh
Thanks though!
Assuming ur doubt to beCan anyone show me to how to solve this??
http://chemistry.about.com/od/chemistryglossary/g/Equilibrium-Constant-Definition.htmhow will you define equilibrium constant??
Okay so only 3 elements in P3 react with H2O i.e Na,Mg and Cl. Na would float on H2O,and catch fire. An exotherminc reaction will occur. Na+H20- NaOH+H2 Ph is 14What are observations on all the reactions of period 3 elements with H2O, Cl and any other reagent in the syllabus?
i'll post it tonight inshAllah.. but those notes only contain reactions...nthng elseBest organic notes please?
mehria
Assuming ur doubt to be
bii)
Its just tricky. We have to reverse the process. Its the same way we use to do to find Ar, we have Ar and now we have to find relative isotopic abundance.
Let percentage abundance of 80.92Br be x and of 78.92 be 100-x
Ar = 79.2
79.2 = [(80.92x) + (78.92(100-x)]/100
x = 49 = relative isotopic abundance of 81Br
100-49 = 51 = relative isotopic abundance of 79Br
c)
This is also tricky, we have to reverse the process.
ABr3 has 1:3 ratio
A : 4.31 / Ar = 1
Br : 95.69/79.9 = 3
A : Br
1 : 3
4.31/Ar : 95.69/(79.9*3)
Ar = 4.3/(95.69/239.7) = 10.79
I have a question in organic chemistry, what is the role of conct. H2SO4? I know that it forms a double bond and stuff, but what else does it do?
better just write the hydrogens next to the OH like HOH2CCH2OH... i think they would mark it right cause it's correct but better stick to the order they use ithttp://studyguide.pk/Past Papers/CIE/International A And AS Level/9701 - Chemistry/9701_s08_qp_2.pdf
For question 5, part cii, can we write the structural formula of the p.alcohol as HOCH2CH2OH? In MS its written as HOH2CCHO? What's the diff? Will my ans be considered wrong?
http://www.chemguide.co.uk/inorganic/period3/elementsreact.htmlWhat are observations on all the reactions of period 3 elements with H2O, Cl and any other reagent in the syllabus?
hope they help...Best organic notes please?
mehria
Need help !!
9701/43/O/N/13
Q#5b
Thanks a lothope they help...
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