Chemistry: Post your doubts here!

[Bilal Khan]

Section B is worth 30 marks and consists of questions based on the section “Applications of Chemistry”, but which may contain material from the core AS and A2 syllabuses. No? :/

No , you retard . It only contains application portion .

 

[The Sarcastic Retard]

No , you retard . It only contains application portion .

Ok, thanks for the information. Now you may dismiss.

 

[ParulS]

Can anyone please post some notes for paper 3 (Practical paper ) ????

 

[reachonlyme]

Can anyone please post some notes for paper 3 (Practical paper ) ????

I have notes for chemistry unit 3 and physics unit 3, you are doing edexcel IAL correct? If so, just give me your email so i can send you the files

 

[ParulS]

I have notes for chemistry unit 3 and physics unit 3, you are doing edexcel IAL correct? If so, just give me your email so i can send you the files

Thanks alot but i am doing CIE so if have any notes for that then please forward

 

[Studydayandnight]

Thanks alot but i am doing CIE so if have any notes for that then please forward

Same here! My practical paper for chem,. is tomorrow and any notes and helpful tips would be awesome! PLEASE HELP!!!!!!!

 

[NIM]

Thnx again dude!!

 

[Studydayandnight]

Guys, for a question which asks to calculate the percentage error, how do we do that? (In the practical paper)

 

[nehaoscar]

Guys, for a question which asks to calculate the percentage error, how do we do that? (In the practical paper)

You mean percentage uncertainity?
It's the error in equipment divided by your answer multiplied by 100
(error/actual answer) x 100

Please can you give an example - like from which years paper?

 

[Mahnoorfatima]

Is the MAX error of a single burette reading o.05 or 0.1?

 

[BhaiArshad]

Is the MAX error of a single burette reading o.05 or 0.1?

0.05

 

[Mahnoorfatima]

If someone has any Tips or notes for calulations please post them ASAP!

 

[Mahnoorfatima]

0.05

Then what is 0.1??

 

[Studydayandnight]

You mean percentage uncertainity?
It's the error in equipment divided by your answer multiplied by 100
(error/actual answer) x 100

Please can you give an example - like from which years paper?

Like this one.http://maxpapers.com/wp-content/uploads/2012/11/9701_s14_qp_33.pdf

It's in the second experiment, c (i)

 

[Studydayandnight]

Thermometer.

Isn't the maximum error 1 in a thermometer?

 

[BhaiArshad]

Isn't the maximum error 1 in a thermometer?

Then what is 0.1??

 

[Studydayandnight]

So 0.5 for a thermometer and 0.05 for a burette right?

 

[BhaiArshad]

Then what is 0.1??

So 0.5 for a thermometer and 0.05 for a burette right?

Yes,

 

[sj0007]

Can some one help me with this PLZZZZZZZZZZZZZZZZZZZZZ!!!!!!!!
It is from May June 2010 Paper 42 Question 3(d)

 

[sj0007]

Chem p4 on 11th .

Can you please help me for Paper 4. I mean how to do Molecular spectrum questions? I have no clue?