How was Chemistry P42

[Hertz]

i got 80%( a ) in AS ....does anybody here knows how much will i need in 42 n 52 to get A* ??

 

[good man12]

i got 80%( a ) in AS ....does anybody here knows how much will i need in 42 n 52 to get A* ??

perhaps about 100 marks total from both 42 n 52

 

[good man12]

is this rite

 

[Jevin Sanoo]

perhaps about 100 marks total from both 42 n 52

How much marks is required overall to get a B in A-level?

 

[good man12]

How much marks is required overall to get a B in A-level?

140-150

 

[good man12]

Minimum 140 points over 270?

yes over 260

 

[Jevin Sanoo]

yes over 260

Ok thanks Is it the same for mauritian students? Sorry for disturbing u but i'm really confused.

 

[good man12]

Ok thanks Is it the same for mauritian students? Sorry for disturbing u but i'm really confused.

no prob, i am preparing for chem p5 nd after every few min i just check ntifications....yes it the same for all candidates

 

[Kumkum]

Organic part was difficult.

i would say that too! it was difficult!

 

[Nishii]

i spent hours studying X ray crystallography, Chromatography, and transition elements..............but nopex , Cambridge sticks to its "only 50% syllabus in exam" policy!!!!!

me too!

 

[Nishii]

is this rite

i labelled only Ea and ΔH !

 

[Nishii]

Minimum 140 points over 270?

over 260, you should average your paper 3 (which is 40) to 30 marks, it will make 260 overall!

 

[Nishii]

Ok thanks Is it the same for mauritian students? Sorry for disturbing u but i'm really confused.

yep same for mauritius! maurice bku pli severe!

 

[Nishii]

what mass of copper did you get in the first question?

 

[Evil_Maknae]

what mass of copper did you get in the first question?

Something like 1.91 g

 

[Nishii]

Something like 1.91 g

how did you do it? first i got 0.0048g then i manipulated it again and got 3.81 or something :/

 

[Evil_Maknae]

I calculated the no of moles of Fe2+/Fe3+ using the concentration and got 0.06 mol. Since mole ratio of Cu to Fe3+ is 1 : 2 , I divided 0.06 by 2 and got no of moles of Cu 0.03 mol. Then mass of Copper = 0.03 * 63.5 = 1.91 g

Can someone else confirm this ?

 

[Nishii]

I calculated the no of moles of Fe2+/Fe3+ using the concentration and got 0.06 mol. Since mole ratio of Cu to Fe3+ is 1 : 2 , I divided 0.06 by 2 and got no of moles of Cu 0.03 mol. Then mass of Copper = 0.03 * 63.5 = 1.91 g

Can someone else confirm this ?

did you take 100 cm3 in consideration in your answer? i did..

 

[Evil_Maknae]

did you take 100 cm3 in consideration in your answer? i did..

Yeah I did

 

[Nishii]

Yeah I did

anyway! for the DNA fingerprinting question? which suspect was arrested?