30 May 08 Update: Sign up for your FREE Introductory Workshop to O Level Chemistry Intensive BootCamp 08
The Chemistry Essential Concepts Coaching Program specially for Sec 4s (2008):
What makes Essentials Chemistry Concepts Coaching Program different from others?
- Deliver Chemistry fundamentals and key concepts for 2008 syllabus
- No hard-core crunching of facts.
- Empower & Motivate you to learn with interest so that you will not forget
- We will constantly monitor your progress
- Materials based on Real Exam Questions extracted from Top Schools
- Concise Chemistry Tips & Strategies in answering tough questions will be given
- We provide email support if you have any burning questions that would like to be solved within 72 hrs
Venue : Woodlands Regional Library
Date & Time : Every Saturday starting on 5th Jan 2008, 2 – 3.30pmClas Size : 4 -8 students
Interested parents & students can sms Sean at 9828 7357 or email at sean@simplechemconcepts.com
For more details, click here.
Please note that once class is filled,we will not accept any more intake. Priority will also be given to students who did not score A for their Sec 3 Chemistry examinations.
Sean
SimpleChemConcepts
“Experience Learning with a Difference”
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ìm studying for an xam. and i cant cm 2 find n e thing on the fractional distillation of liquid air or fermented liquor . n e help?
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For fractional distillation, it involves the separation of gases (for liquid air for example) based on the difference in Boling Points of the components that make up air.
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does his mean that to distill dry air, it must first be compressed to liquid?
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hey.thanks a lot for answering my questions previously.
i was wondering if you could help me with this question. it’s something to do with diffusion. the diagram is in this link, http://i22.photobucket.com/albums/b306/Joy1992/diffusionquestion.jpg?t=1211551364
i am not sure if it works. but the question is
‘which one of the following gases when present in the beaker over the porous pot will cause the water level at Y to fall?’
A Carbon Monoxie
B Chlorine
C Nitrogen
D Methane
thanks again.
Reply
LY Reply:
March 21st, 2009 at 12:07 pm
Carbon Monoxide ;D
The chemical formula for carbon monoxide is CO while oxigen is O2… thus oxygen molecules will diffuse out
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helloying Reply:
June 4th, 2009 at 3:48 pm
Hi i dont understand why is it carbon monoxide. Is is that the heavier particle will diffuse out? O2 Mr=32 while CO Mr= 28. However Methane has a even lower Mr. Why is it that methane cannot work? And also will they reach some equalibrium sate and then the water level will rise again?
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