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Chemistry Paper 4-theory- doubts =D

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PhyZac

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iKhaled and knowitall10

I need help..badly...!:cautious:

thanks for first question EDIT: Jazaki Allah khairan, i know those are silly questions but i remembr them in papers...May Allah s.w.t bless you with highest grades

now second?
 
Ramsha007

Ramsha007

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Assalam-o-Alikum
plz Can anyone tell me how do we know that the height ratio is 3:1 or 9:6:1 in mass spectrum containing chlorine isotopes as stated in chem guide?
 
iKhaled

iKhaled

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PhyZac said:
iKhaled and knowitall10

I need help..badly...!:cautious:

thanks for first question

now second?
Click to expand...
oh okay xray.. when u talk about that do u mean xray-crystallography ?

and NMR concept is that it provides an external magnetic field where the hydrogen nucleus in the molecular environments of the organic compound spin in the direction of the magnetic field or against the direction of the magnetic field..the hydrogen protons are like tiny magnets (u can imagine it that way)
 
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PhyZac

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iKhaled said:
oh okay xray.. when u talk about that do u mean xray-crystallography ?

and NMR concept is that it provides an external magnetic field where the hydrogen nucleus in the molecular environments of the organic compound spin in the direction of the magnetic field or against the direction of the magnetic field..the hydrogen protons are like tiny magnets (u can imagine it that way)
Click to expand...
Yup that thing

and Jazaka Allah khairan!!!! I have feeling this is coming..!
Thanks alot! Nice explanation ! May Allah s.w.t bless you with highest grades Aameen!
 
iKhaled

iKhaled

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PhyZac said:
Yup that thing

and Jazaka Allah khairan!!!! I have feeling this is coming..!
Thanks alot! Nice explanation ! May Allah s.w.t bless you with highest grades Aameen!
Click to expand...
wow thanks a lot for the prayer and same goes to u..inshAllah

anyway for the xray-crystallography is that it only detects areas in the structure with high electron density and hydrogen has only one electron in its structure so it has a very low electron density that the xray can't detect it
 
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