chem 1 nd 2 .......

[Areeba Khan]

for chem paper 1 nd 2.........do we have 2 learn melting nd bolilng points?

 

[asad.manutd9]

for chem paper 1 nd 2.........do we have 2 learn melting nd bolilng points?

just remember whose b.p is high and low than the other in general, this is what i do. now dont tel me that u dont know the b.p of water

 

[Areeba Khan]

general like any examples? lol i knw

 

[asad.manutd9]

general like any examples? lol i knw

like alcohol ill boil off before water boils in fractional distillation and that

 

[Areeba Khan]

alryt thanks i got it ........dey wont specifically ask k wats da boiling poiint of ethanol?

 

[asad.manutd9]

alryt thanks i got it ........dey wont specifically ask k wats da boiling poiint of ethanol?

never seen such question in past papers, or atleast i dont remember any

 

[Areeba Khan]

ahan thnkx

 

[asad.manutd9]

ahan thnkx

yw

 

[Vogue]

Question!
From which ammonium salt can the greatest mass of ammonia b obtained?
A) 0.5 mole (NH3)2PO4
B) 0.5 mole (NH4)2SO4
C) 1 mole NH4Cl
D) 1 mole NH4NO3
please explain!​

 

[farahdar]

Question!​

From which ammonium salt can the greatest mass of ammonia b obtained?​

A) 0.5 mole (NH3)2PO4​

B) 0.5 mole (NH4)2SO4​

C) 1 mole NH4Cl​

D) 1 mole NH4NO3​

please explain!​

Check the percentage by mss of ammonia in each one

 

[twelveoclock]

Check the percentage by mss of ammonia in each one

So we shouldn't consider the number of moles gives?

 

[farahdar]

Yeah, multiply it with the no. of moles