Comments on: O Level Chemistry – Mole Calculation + Organic Chemistry Question

By: yumi

yumi — Sat, 08 May 2010 16:32:15 +0000

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

By: yumi

yumi — Sat, 08 May 2010 14:04:01 +0000

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

By: M.A Rajagopal

M.A Rajagopal — Wed, 05 May 2010 10:23:59 +0000

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

By: Saud

Saud — Fri, 19 Feb 2010 17:05:20 +0000

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.

By: rija

rija — Tue, 05 May 2009 18:52:33 +0000

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