hardest chem questions (1 Viewer)

[Trebla]

it was a pretty solid question but doesnt cut the 'hard' range cos as long as u follow the basic algebra and procedures its doable

So your definition of hard is 'undoable'? lol

The maths can get a lot harder like solving an equilibrium constant problem (if you do Industrial Chemistry) which involves finding the roots of a polynomial of degree three or higher (which will never appear in the HSC)

 

[RANK 1]

So your definition of hard is 'undoable'? lol

The maths can get a lot harder like solving an equilibrium constant problem (if you do Industrial Chemistry) which involves finding the roots of a polynomial of degree three or higher (which will never appear in the HSC)

almost undoable

 

[RANK 1]

The maths can get a lot harder like solving an equilibrium constant problem (if you do Industrial Chemistry) which involves finding the roots of a polynomial of degree three or higher (which will never appear in the HSC)

hit me

 

[nichorowitz]

i got the answer.
i left myself with the following equation at the end:
n = 63k -48 -x (where k is an interger - the stoichiometric ratio in the neutralisation)

and just by guess work i figured out if x is nitrogen x = 14
hence n=1
which happened to work with the stoichemetric ratio

is there a better way to do this without guess work?

 

[RANK 1]

i got the answer.
i left myself with the following equation at the end:
n = 63k -48 -x (where k is an interger - the stoichiometric ratio in the neutralisation)

and just by guess work i figured out if x is nitrogen x = 14
hence n=1
which happened to work with the stoichemetric ratio

is there a better way to do this without guess work?

P and S are both higher than 15 and the total mass for H2CO3 is lower than 63

 

[nichorowitz]

could not k be like 3 or something though?

 

[mathemalia]

which is why we need something to separate the elite from the rest

what's the outcome of the separation?

 

[lolcakes52]

Well, if you want to know where not to look for hard questions, try the 2011 hsc. That thing was easy.

 

[b3kh1t]

Well, if you want to know where not to look for hard questions, try the 2011 hsc. That thing was easy.

BOOO YAAAAAa loved that

 

[RANK 1]

could not k be like 3 or something though?

wheres does this k come from?