Chemistry Unit 6B 15.05.2013!! June 2013

[Zifa]

i agree the paper was the hardest one yet! dunno abt the yellow nickel crystals wrote nicl6 with a -4 charge....
more importantly how did you find the percentage by mass of caffeine in tea in the last question???

 

[Nofel Mehmood]

For the nickel question I think it was [NiCL4]2- . For the very last question it is recrystillisation

Even I wrote [NiCl4]2- not sure though. :/

 

[Nofel Mehmood]

i agree the paper was the hardest one yet! dunno abt the yellow nickel crystals wrote nicl6 with a -4 charge....
more importantly how did you find the percentage by mass of caffeine in tea in the last question???

0.085g/25g x 100% = 0.34% is what i got.

 

[Nofel Mehmood]

Do you guys think A* would be at 40/50?

Just hope that the UMS is low so you can get a high mark.

 

[Zifa]

0.085g/25g x 100% = 0.34% is what i got.

OMG ok so i messed up! In my last millisecond i just picked the mass of calcium carbonate and used it in the formula, i know: DUM MOMENT!

Thankyou though...

 

[Zifa]

Guys wat abt the NMR, it completely threw me! wat structure did you ppl get?

 

[Nofel Mehmood]

Do you think it will be low? How did your centre do?

Our center dint do that good either. It was hard overall so it MIGHT be low, Insha'Allah.

 

[Zifa]

Do you think it will be low? How did your centre do?

At my centre we also found the paper really difficult, so i guess they will reduce the grade boundaries and UMS

 

[.DR.me.]

How many marks does each think they will lose ?

 

[howadah]

Guys, how many marks you think you will lose in the whole exam?

 

[qstar.inc]

0.085g/25g x 100% = 0.34% is what i got.

it matched with mine

 

[qstar.inc]

Guys, how many marks you think you will lose in the whole exam?

maybe all

 

[tasmiah2310]

Around 10 marks .. :/

So I hope A*isnt at 40/50

 

[Ni7san]

i wrote NiCl6 with a charge of -4

 

[Zifa]

Guys, how many marks you think you will lose in the whole exam?

Yeah 10 marks if im not lucky but praying that i am soo, InshAllah.....

 

[Adam94]

Around 10 marks .. :/

So I hope A*isnt at 40/50

I think its going to be lower most probably 36 or 37. If look at june 2011 the boundary for A* was 34, that was the lowest ever they had and that paper was soo much easier than this

 

[meetalvarsani]

omg the paper was so BAD!!

 

[qstar.inc]

omg the paper was so BAD!!

u indian?

 

[Sana salim]

Around 10 marks .. :/

So I hope A*isnt at 40/50

what is d range for A?in d previus years

 

[Nofel Mehmood]

I think its going to be lower most probably 36 or 37. If look at june 2011 the boundary for A* was 34, that was the lowest ever they had and that paper was soo much easier than this

June 2011 was effin hard bro. :O