AS Chemistry P2 Prep.

[angelgirl:)]

yes ...it means the ions which dont take prt in the reaction...means remains in the solution same

in redox reaction

 

[saudha]

necleon- neutrons + proton

 

[angelgirl:)]

necleon- neutrons + proton

necleon= neutron+proton...lol

 

[saudha]

in redox reaction

i guess 1st ch is done.....

 

[saudha]

necleon= neutron+proton...lol

it is a defination... whts LOL abt tht?

 

[angelgirl:)]

i guess 1st ch is done.....

let me finish it...

 

[angelgirl:)]

necleon- neutrons + proton

u put - sign ...ppl will think its minus not equalto

 

[saudha]

let me finish it...

im doing next ch: Atomic Str

 

[saudha]

u put - sign ...ppl will think its minus not equalto

ohhhh

 

[angelgirl:)]

im doing next ch: Atomic Str

ok...

 

[mujtabashahnawaz]

o.o;

Hmm... I guess.

Edit: Question; Summer/June 2004, question 3, part (d):

Paper: Click me!
Mark Scheme: No, click me!

Is it important to show the 'balloon'-shaped thing over ammonia for the lone pair that's drawn in the Mark Scheme? If so, why, because in the question they only asked for the shape and the bond angle...

Jazak Allah Khayr.

I think it will be better to show the lone pair so that it may be clearly visible that the lone pair will repel bond pairs and decrease their angle.

 

[angelgirl:)]

saudha..define mole?

 

[saudha]

unit of amount of substance which has particles as in c- 12... right.?

 

[angelgirl:)]

saudha... how do u determin the moleculer formula of the compound?

 

[saudha]

by the empirical formula and the RMM
divide by RMM and multiply

 

[angelgirl:)]

unit of amount of substance which has particles as in c- 12... right.?

no be specific...mass of substance that has the same no. of particles as there r atoms in exactly 12g of C12...the particles may be atoms ,molecules ,ions or even electrons...

 

[angelgirl:)]

saudha... how do u determin the moleculer formula of the compound?

by compuetion analysis?

 

[saudha]

no be specific...mass of substance that has the same no. of particles as there r atoms in exactly 12g of C12...the particles may be atoms ,molecules ,ions or even electrons...

ok ill remember tht.......

 

[saudha]

by compuetion analysis?

saudha... how do u determin the moleculer formula of the compound?

.... wht do u mean?

 

[angelgirl:)]

ok ill remember tht.......

lol no...how to determing moleculer formula of the compound by combution analysis?