8 Responses

1. hydrocarbon chemical formulas | Bookmarks URL

   26|Oct|2008 1

   [...] O Level Chemistry – Mole Calculation + Organic Chemistry Question (d) Deduce the formula of hydrocarbon. Related Articles:. Chemisty Phenomenon – Baking Cake; Chemistry Questions; Chemistry Question – Acids, Bases & Salts; O Level Chemistry – Mini Series on Tough MCQs Part 2; Chemistry Question – Mole … [...]

2. Anshul

   22|Jan|2009 2

   10cm3 of oxygen was left over
   30cm3 of the gas was used for combustion
   90cm3 of carbondioxide was formed
   ch4 that is methane

   tell me if my answer is right and for which class is this question coz i am in class 10

   Reply

3. cosmos juka

   30|Apr|2009 3

   Thank you for your contribution for helping chemistry students all over the world.
   With you,i am very optimistic of becoming a great chemist.In my school,i don’t have
   a good chemistry teacher but now,am confident to learn more from you.Thanks.

   Reply

4. rija

   06|May|2009 4

   i don’t understand it.Sean explain it in detail……

   Reply

5. Saud

   20|Feb|2010 5

   a) 10……….coz it is mentioned after soda lime was introduced 10 cm was left
   b) 90…………simply 100-10=90
   c) 60…………10 was oxygen rest 60 removed by soda lime and 10+60=70 that was given as the total left over
   d) sorry……………im not certain about this one so i request to please tell me about my this work and any correction that need to be made.

   Reply

6. M.A Rajagopal

   05|May|2010 6

   When a hydrocarbon is completely burnt the products will be carbon dioxide and water and unreacted oxygen (in this case)
   Nothing is mentioned about water or steam in the question.
   Could you please explain.
   Thanks.
   Rajagopal

   Reply

7. yumi

   08|May|2010 7

   (a)10 cm3
   (b)90 cm3
   (c)60 cm3
   (d)C3H6

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8. yumi

   09|May|2010 8

   (a)10 cm3
   (b)90 cm3
   (c)60 cm3
   (d)C3H6
   Could you tell me if my answers are goo?

   Reply