Chemistry: Post your doubts here!

[Iris Dylan Lane]

which is?

Net Vander Wall's force is constant

 

[awesomaholic101]

Net Vander Wall's force is constant

lol so i think that does kinda goes with my theory then

 

[Wkhan860]

Thomas had to get it wrong so many times before he got it right and we wont know about gravity if Newton didnt question himself about a falling apple [/QUOTE]
I wish tht douchebag ddnt qtn himself...our phy books would had been half of what they are now -_____-

 

[Wkhan860]

Net Vander Wall's force is constant

I was the onw who told u that.

 

[awesomaholic101]

Thomas had to get it wrong so many times before he got it right and we wont know about gravity if Newton didnt question himself about a falling apple

I wish tht douchebag ddnt qtn himself...our phy books would had been half of what they are now -_____-[/QUOTE]
that would be applicable for many people actually .. and you say you are a future-engineer!

 

[awesomaholic101]

I was the onw who told u that.

you are the "great teacher" apparently

 

[Wkhan860]

Enough jokes on this thread

Im srs...go chck there...i said the same thng...just in a better nd more complicated way

 

[Wkhan860]

I wish tht douchebag ddnt qtn himself...our phy books would had been half of what they are now -_____-

that would be applicable for many people actually .. and you say you are a future-engineer![/QUOTE]
I wish Faraday died frm lighting that struck him. No Einstein was amazng.

 

[awesomaholic101]

I wish Faraday died frm lighting that struck him. No Einstein was amazng.

lol chill ... what's it with you and Einstein?

 

[Wkhan860]

lol chill ... what's it with you and Einstein?

Special.....relativity xD

 

[awesomaholic101]

Special.....relativity xD

ahhaan i see!

 

[Metanoia]

I ddnt evn bother reading it twice. Its not relevant...we dnt see such stuff in AL.
nd yup i guesss so

To be fair, its not an irrelevant question. Rather, its a question that requires deeper understanding of the concepts covered at A levels.

 

[krishnapatelzz]

exams oveeeeeeeeeeeeeer

 

[Mohammed Ayaan]

pls help me i need papers for 2017 - 2018

 

[Lola_sweet]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdf

How do we do Qs 15 and Qs 21?

 

[phanttasy]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdf

How do we do Qs 15 and Qs 21?

15:
Use the equation CaCO3 -> CaO + CO2
so we find the n(CaCO3) = (1000+200) / [40.1+12+(16x3)]
n(CaCO3)= 11.98
n(CO2)=11.98
Mass= 119.8x(12+16+16)
=527 (B)

21:
see image attached

 

[Dark Destination]

What is the best book for A-Level Chemistry? Any book that covers the entire syllabus of 2016?

 

[awesomaholic101]

What is the best book for A-Level Chemistry? Any book that covers the entire syllabus of 2016?

http://www.amazon.in/Cambridge-Inte...Examinations/dp/1107638453/ref=dp_ob_image_bk
as long as i know, that one does

 

[bakhita]

What is the best book for A-Level Chemistry? Any book that covers the entire syllabus of 2016?

http://www.amazon.in/Cambridge-Inte...Examinations/dp/1107638453/ref=dp_ob_image_bk
I've the first edition of this one, though it covers the syllabus, but it's approach is not that high...My sis prepared her chem through this but she wasn't satisfied so we bought this one:
http://www.amazon.com/Cambridge-Int..._UL160_SR117,160_&refRID=0HX97BEZKTD0JX3XJX0M
It's much better but it's very difficult to find in markets, because of it being very latest! But I can assure you not only does it cover the syllabus, but it's also very comprehensive and links everything very well!

 

[Dark Destination]

http://www.amazon.in/Cambridge-Inte...Examinations/dp/1107638453/ref=dp_ob_image_bk
I've the first edition of this one, though it covers the syllabus, but it's approach is not that high...My sis prepared her chem through this but she wasn't satisfied so we bought this one:
http://www.amazon.com/Cambridge-International-AS-Level-Chemistry/dp/1444181335/ref=pd_sim_sbs_14_1/175-7334074-2334822?ie=UTF8&dpID=51hLUA9DWIL&dpSrc=sims&preST=_AC_UL160_SR117,160_&refRID=0HX97BEZKTD0JX3XJX0M
It's much better but it's very difficult to find in markets, because of it being very latest! But I can assure you not only does it cover the syllabus, but it's also very comprehensive and links everything very well!

I have the first edition of that book, too. It's orange.
Some of the concepts for the 2016 syllabus are missing in the first edition book, though.