Biology; Chemistry; Physics: Post your doubts here!

[Spidey21]

no no no!! u must've read it wrong. it must be this way:
Mass(g) = Mol(mol).Mr

even Moles are not in dm3 its in mole.

yeah
ig/dm3 is for conc
dm3 is for volume

 

[malay]

no no no!! u must've read it wrong. it must be this way:
Mass(g) = Mol(mol).Mr

even Moles are not in dm3 its in mole.

nope! i didn't read it wrong!m sure dats how it is

a)no. of moles=mass in g/Mr or Ar
b)Mass(g/dm3)=Mol(dm3).Mr

dats wat u can find on pg 2 of evry chem ATP past papers (atleast in mine)

 

[malay]

yeah
ig/dm3 is for conc
dm3 is for volume

heh..i know dat alredy

 

[Spidey21]

heh..i know dat alredy

*LIKE A BOSS*1! LOL

 

[daredevil]

nope! i didn't read it wrong!m sure dats how it is

a)no. of moles=mass in g/Mr or Ar
b)Mass(g/dm3)=Mol(dm3).Mr

dats wat u can find on pg 2 of evry chem ATP past papers (atleast in mine)

yh u r ryt. i checked out mine too. i don't know. someone else PLEASE HELP OUT WITH THISS!! :/ i have seen it the first time in three year. I can't believe myself!! =/ =/

 

[malay]

yh u r ryt. i checked out mine too. i don't know. someone else PLEASE HELP OUT WITH THISS!! :/ i have seen it the first time in three year. I can't believe myself!! =/ =/

last time i studied this i was able to find da reasoning bu now m totally blank

 

[Spidey21]

yh u r ryt. i checked out mine too. i don't know. someone else PLEASE HELP OUT WITH THISS!! :/ i have seen it the first time in three year. I can't believe myself!! =/ =/

could you please explain the problem??

 

[Spidey21]

last time i studied this i was able to find da reasoning bu now m totally blank

whats the problem you guys are facing??

 

[malay]

whats the problem you guys are facing??

Mass(g/dm3)=Mol(dm3).Mr
this equation doesn't make any sense

solve it and we'l be really thankful

just dat

 

[Spidey21]

yes it does not make any sense

Mass(g/dm3)=Mol(dm3).Mr
this equation doesn't make any sense

solve it and we'l be really thankful

just dat

so how do you want me to solve it

 

[malay]

yes it does not make any sense


so how do you want me to solve it

how m i suppose to know
just find out how it is obtained

 

[Spidey21]

how m i suppose to know
just find out how it is obtained

it cant be
mass is always measured in grams or kg or tonnes
the g/dm3 is the concentration formula..
its a misprint i tell you...

 

[malay]

it cant be
mass is always measured in grams or kg or tonnes
the g/dm3 is the concentration formula..
its a misprint i tell you...

dat was useless buh still thanxx..........for nothing Sir

 

[Spidey21]

dat was useless buh still thanxx..........for nothing Sir

what else do you want me to do....
THERE IS NOTHING POSSIBLE
and
YOU CANT SOLVE A MISPRINT!!

 

[malay]

what else do you want me to do....
THERE IS NOTHING POSSIBLE
and
YOU CANT SOLVE A MISPRINT!!

NOTHING THANX!!

 

[Spidey21]

NOTHING THANX!!

 

[daredevil]

it cant be
mass is always measured in grams or kg or tonnes
the g/dm3 is the concentration formula..
its a misprint i tell you...

is it a misprint?? bcuz how can there be a misprint in every copy of the atp book?? i have atp past papers by redspot of years 1997-2009 .... if u have a different set then check the formula in it and tell. plz

 

[Spidey21]

is it a misprint?? bcuz how can there be a misprint in every copy of the atp book?? i have atp past papers by redspot of years 1997-2009 .... if u have a different set then check the formula in it and tell. plz

i dont have atp pps..

 

[SALT]

http://www.xtremepapers.com/papers/...l O Level/Chemistry (5070)/5070_s11_qp_42.pdf
question number 6, plz
why is the answer D??

 

[Mayedah]

http://www.xtremepapers.com/papers/...l O Level/Chemistry (5070)/5070_s11_qp_42.pdf
question number 6, plz
why is the answer D??

Calculate the moles of both.the moles of Q are double tht of P so it will produce double volume of hydrogen and because e concentration of p is more thn Q so the reaction will go faster!