Physics, Chemistry and Biology: Post your doubts here!

[AAnsarii]

Fe2O3 + CO ==> 2Fe + CO2

thats as simple as adding a 2 infront of Fe

what about d O?

 

[Penalopi]

i heard that questions will be like 1993 and 1994 ( before 2000) so what are u loosing

freeexampapers.com has the old papers, if you don't find it there you rnt gonna find it anywhere!
My advice: stick to recent papers!!

 

[Penalopi]

what about d O?

After iron is collected oxygen is blown into it in the oxygen furnace to remove the carbon until only 1% is left

 

[AAnsarii]

i heard that questions will be like 1993 and 1994 ( before 2000) so what are u loosing

who said dat?? truely?

 

[AAnsarii]

After iron is collected oxygen is blown into it in the oxygen furnace to remove the carbon until only 1% is left

no no, in d eqn..
Fe2O3 + CO == 2Fe + CO2

 

[thats_me]

Fe2O3 + CO ==> Fe + CO2
how do v balance dis?

Fe2O3 +3 CO ==> 2Fe + 3CO2
least number first most number last thats how i do it
least is Fe thn C thn O

 

[AAnsarii]

Fe2O3 +3 CO ==> 2Fe + 3CO2
least number first most number last thats how i do it
least is Fe thn C thn O

dats seriously splendid
thanx a bunch

 

[sma786]

Magnesium reacts with bromine to form magnesium bromide.
(a) Magnesium bromide is an ionic compound. Draw a diagram that shows the formula of
the compound, the charges on the ions and the arrangement of outer electrons around
the negative ion.
The electron distribution of a bromine atom is 2, 8, 18, 7.

so it will be Mg will give one atom to Br ..??

 

[thats_me]

Magnesium reacts with bromine to form magnesium bromide.
(a) Magnesium bromide is an ionic compound. Draw a diagram that shows the formula of
the compound, the charges on the ions and the arrangement of outer electrons around
the negative ion.
The electron distribution of a bromine atom is 2, 8, 18, 7.

so it will be Mg will give one atom to Br ..??

Yup! 2 electron from Mg to Br [Mg]2+ 2[Br]-

 

[AAnsarii]

Magnesium reacts with bromine to form magnesium bromide.
(a) Magnesium bromide is an ionic compound. Draw a diagram that shows the formula of
the compound, the charges on the ions and the arrangement of outer electrons around
the negative ion.
The electron distribution of a bromine atom is 2, 8, 18, 7.

so it will be Mg will give one atom to Br ..??

atom?? i think u mean e-
yup each electron will b given 2 each Br, ie MgBr2

 

[thats_me]

dats seriously splendid
thanx a bunch

thx

 

[sma786]

atom?? i think u mean e-
yup each electron will b given 2 each Br, ie MgBr2

Yup! 2 electron form Mg to Br [Mg]2+ 2[Br]-

thanks, Mg + 2br = MgBr2..?

 

[thats_me]

thanks, Mg + 2br = MgBr2..?

Exactly!

 

[AAnsarii]

NE difficult pprs in chem? plz in4m me
n thnx

 

[sma786]

Exactly!

i m a geniusss *le happy dancee* lol jk

 

[AAnsarii]

thanks, Mg + 2br = MgBr2..?

its Mg + Br2 = MgBr2, halogens r always diatomic, rite?

 

[sma786]

its Mg + Br2 = MgBr2, halogens r always diatomic, remember?

yup, got it =]

 

[thats_me]

i m a geniusss *le happy dancee* lol jk

hahahaha u sure are

 

[thats_me]

its Mg + Br2 = MgBr2, halogens r always diatomic, remember?

oh yea forgot that :| :O

 

[Penalopi]

no no, in d eqn..
Fe2O3 + CO == 2Fe + CO2

Umm, there is no oxygen in the equation