Chemistry paper 42 may/june 11

[beacon_of_light]

yeah electrolysis!!!

 

[bionology]

formation reaction is simply making of 1 mole of solid from its constituent atoms, that might be of a + or a - value , however i don't know if it was to be applied here :Search:

 

[angelgurl]

ya i wrote electrolysis
thank God!!
and wht were the three types of bonding in NH4F?

 

[beacon_of_light]

formation reaction is simply making of 1 mole of solid from its constituent atoms, that might be of a + or a - value , however i don't know if it was to be applied here :Search:

"survival of the fittest" lol haha

 

[bionology]

ionic/dative/covalent

 

[angelgurl]

ahan nd did all the children match the mom mine did
but only one child didnt match the dad

 

[beacon_of_light]

^^^ CORRECT!

 

[bionology]

yes yes, all children were of the mother, but 1 'unlucky' child didn't match his father, lol.
Explanation was the same as to matching of DNA fragments

 

[beacon_of_light]

btw wat was the monomer to be identified in the skeletal formula of the polymer in stereoisomerism question ... ????
i mentioned --O-CH(C2H5)---CO---

 

[skyfox]

@beacon. Yes it is but it supposed to be OH in the terminal end. OHCH(C2H5)COOH.
1. Extract dna
2. Using PCR
3. Restriciton enzyme
4. Put in agragose gel
5. Carry out electrophoresis
6. Forgot. Lol.

 

[angelgurl]

do u remember the name of the polymer it? i guess its name had ester

 

[skyfox]

yes high temperature and low pressure ..didn't they ask for "TWO" conditions...

Yes they ask 2 condition. High temp and low pressure.

What was the answer for the melting point and conductivity and the equation for prove that ?

 

[bionology]

for melting point state the macromolecular structures and simple one
then for conductivity mention about the valence electrons which metals have

btw, what was the lower and upper limit for nano tube?

 

[skyfox]

My answe is from 0.1 nm to 10 nm. But on wiki it is said from 0.1 to 100. How was yours ?

So overall, what would be the GT for this paper ? I thought it is 60.

 

[boy2011]

B polymer that we have to made it was an addition polymer \..rytttttt????nd after hydrolysis waht was the other strutctre we have to made from formula C2H4O???nd wat was da strucure after ths part in which it was said that Structure C dont declourises bromine but react with iodine i thnk???wat was that i have drwan an aldehyde because with c2h4o only aldehyde was possible.....

 

[boy2011]

for melting point state the macromolecular structures and simple one
then for conductivity mention about the valence electrons which metals have

btw, what was the lower and upper limit for nano tube?

dat was 10^-9 till 10^-12

 

[skyfox]

for melting point state the macromolecular structures and simple one
then for conductivity mention about the valence electrons which metals have

btw, what was the lower and upper limit for nano tube?

dat was 10^-9 till 10^-12

100nm is 10^-7. 10^-12 is 0.001 nm.

 

[bionology]

dat was 10^-9 till 10^-12

I did the same !
it cannot be 10^-7 m as nano itself stands for 10^-9m

 

[rocker]

child 2,ph 2.28 and l was 5.97*10^23 , 987kg cu somthing like that,i use cuso4 as electrolyte and in anode copper ore.ionic,covalent,dative bond in hf.is it correct?

 

[skyfox]

Hmm. I dont know. I just write what i know from chemistry booklet. ..