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Well i've tried to find optical isomers for each one of them, see attached file. Well i couldn't find an isomer for the (IV) one.
I think option B is correct.
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Well i've tried to find optical isomers for each one of them, see attached file. Well i couldn't find an isomer for the (IV) one.
Oh yeah!! I totally forgot about the chiral centre part! *facepalm*Well i've tried to find optical isomers for each one of them, see attached file. Well i couldn't find an isomer for the (IV) one.
I think option B is correct.
Read this : http://www.chemguide.co.uk/mechanisms/nucsub/whatis.htmlplz explain:
the difference between Sn1 and Sn2 reactions?
an intermediate in a reaction ?
in brief detail plz with examples thanku
Electronic configurations:Which element has an equal number of electron pairs and of unpaired electrons within orbitals of
principal quantum number 2?
A beryllium
B carbon
C nitrogen
D oxygen
how to work it out? kinda stuck + i suck @ chem
It would be helpful if you attach the link to the papers...I kinda need help with chem
oct nov 2011 p53
Qn 1 e)
The ms says 5 marks for; names of gas, Mr, time of effusion, rate of effusion and the units of everything.. im sorta confused, wats the unit of rate of effusion? Grams per mol per second?
And oct nov 2011 p52
Qn 2a)
its says to calculate log (rate of reaction). How is that calculated, is it log (1/time)? Or are there other calculations to do? And how do u obtain a negative ans bcz thts was the ms requires
Compare with 1october/november 2011 paper 41
question 2, how do we find the order of reaction for [H+] ??
Your order of reaction for [NO] is wrong, it is not 0, it is 2Can anybody check that, i can't find the correct value for the rate constant.
1. YOu are right that is because of isotopes..Can anyone answer this for me:
1. Suggest why the relative atomic mass of Martian oxygen is different from that of oxygen obtained from Earth?
is that because of isotopes of oxygen???
2. The first ionisation energy of oxygen is 1310 Kjmol-1.
Suggest why there is little difference between the first ionisation energies of 16O, 17O and 18O?
but the marking scheme ans is DElectronic configurations:
Be = 1s2 2s2
C = 1s2 2s2 2p2
N = 1s2 2s2 2p3
O = 1s2 2s2 2p4
In the second shell, the two orbitals are 2s2 and 2p6; the carbon atom is the only one having equal number of electrons in both....
So, the answer is B...
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