Chemistey Doubts

[gary221]

im a bit weak in organic cemistry btw
just cant figure out all that ester and amide linkages!!!!

 

[JmCullen]

Yea! me too.. so we better bring the topic back.

well i didnt understood wat u wrote but the protein structure is like this with a peptide bond in between

which one should we draw? ( i mean the structure)

 

[gary221]

i think its the second 1 u know d longer 1!!!

but d chances of this ques being repeated r low!!!
so dont worry too much

 

[JmCullen]

yep. im thinking of that too..
Thanks anyway

 

[gary221]

in my book its sth like this

 

[brainiac]

well the protein structure is the second one ........... the first one shows the acid group and amine group ....and after the elimination of water when they combine, they form the protein .... hope i helped

 

[JmCullen]

well the protein structure is the second one ........... the first one shows the acid group and amine group ....and after the elimination of water when they combine, they form the protein .... hope i helped

yep!!! get it! Thanksssssss!!!!

 

[gary221]

well the protein structure is the second one ........... the first one shows the acid group and amine group ....and after the elimination of water when they combine, they form the protein .... hope i helped

yep!!! get it! Thanksssssss!!!!

yup i got it too!!!
thnx!! :friends: :friends:

 

[MohammedNoor]

Can anbody post all the formulas of chemistry plz i need them !!!!!!!!!!!!!!!!!!!

it would very helpful




plz plz i need them

 

[JmCullen]

Can anbody post all the formulas of chemistry plz i need them !!!!!!!!!!!!!!!!!!!

it would very helpful




plz plz i need them

i've just posted them in your topic

 

[MohammedNoor]

Can anbody post all the formulas of chemistry plz i need them !!!!!!!!!!!!!!!!!!!

it would very helpful




plz plz i need them

i've just posted them in your topic

where i didnt get it

 

[JmCullen]

Can anbody post all the formulas of chemistry plz i need them !!!!!!!!!!!!!!!!!!!

it would very helpful




plz plz i need them

i've just posted them in your topic

where i didnt get it

you already got it right? :shock:

 

[JmCullen]

Another question here..

hmm.. how do we know which metal will not react with acid?
like copper..

 

[saraiqbal123]

chemistry

i have some problem in the following question i will really appriciate if u ppl help me in this!!
http://www.xtremepapers.me/CIE/Cambridg ... _qp_32.pdf
question number 8(c) in this link.


this is the mark scheme:
http://www.xtremepapers.me/CIE/Cambridg ... _ms_32.pdf

 

[gary221]

its in the reactivity series


the least reactive metals eg gold, silver wont react at all and copper wont react so easily!!!

 

[JmCullen]

its in the reactivity series


the least reactive metals eg gold, silver wont react at all and copper wont react so easily!!!

oh! okay!
so it's according to the reactivity series!
thanks alot!

 

[gary221]

s ok!! :good: :good:

 

[SmartNour]

its NH-C-R-C=O-N-H-C-R-C=O where R represents alkyl group.

 

[gary221]

its NH-C-R-C=O-N-H-C-R-C=O where R represents alkyl group.

??????

 

[JmCullen]

Re: chemistry

i have some problem in the following question i will really appriciate if u ppl help me in this!!
http://www.xtremepapers.me/CIE/Cambridg ... _qp_32.pdf
question number 8(c) in this link.


this is the mark scheme:
http://www.xtremepapers.me/CIE/Cambridg ... _ms_32.pdf

can anyone do this? i'm stuck too!
im stuck in the mole of lead(II) nitrate..
why it's 0.0133 ??? :%)