Comments on: O Level Chemistry: Challenging Mole Calculation Questions http://www.simplechemconcepts.com/o-level-chemistry-challenging-mole-calculation-questions/ O-Level Chemistry Made Easy Sat, 14 Jan 2012 03:43:17 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: Abel http://www.simplechemconcepts.com/o-level-chemistry-challenging-mole-calculation-questions/comment-page-1/#comment-7521 Abel Tue, 03 May 2011 16:26:23 +0000 http://www.simplechemconcepts.com/?p=3150#comment-7521 I feel it is really fun for you guys to early tackle questions,as for me I think I'm still far away,even if I have much passion. I feel it is really fun for you guys to early tackle questions,as for me I think I’m still far away,even if I have much passion.

]]> By: sean http://www.simplechemconcepts.com/o-level-chemistry-challenging-mole-calculation-questions/comment-page-1/#comment-7513 sean Thu, 28 Apr 2011 14:27:49 +0000 http://www.simplechemconcepts.com/?p=3150#comment-7513 Hi Abel, If you based in Singapore, you can consider our Chemistry Classes for O and A-Levels. Find out more information at http://www.WinnersEducation.com Regards, Sean Chua Hi Abel,

If you based in Singapore, you can consider our Chemistry Classes for O and A-Levels.
Find out more information at http://www.WinnersEducation.com

Regards,
Sean Chua

]]> By: abel http://www.simplechemconcepts.com/o-level-chemistry-challenging-mole-calculation-questions/comment-page-1/#comment-7448 abel Mon, 28 Mar 2011 23:01:25 +0000 http://www.simplechemconcepts.com/?p=3150#comment-7448 can you please be my personal tutor can you please be my personal tutor

]]> By: Vidushi http://www.simplechemconcepts.com/o-level-chemistry-challenging-mole-calculation-questions/comment-page-1/#comment-7340 Vidushi Sun, 27 Feb 2011 13:36:23 +0000 http://www.simplechemconcepts.com/?p=3150#comment-7340 Mr or H2SO4 = 98 98g H2SO4 = 1 MOL 50g H2SO4 = 0.51 MOL 1 MOL H2SO4 = 1 MOL HCL 0.51 MOL H2SO4 = 0.51 MOL HCL NO OF MOL HCL IN 40OCM^3 WATER = 0.51 MOL NO OF MOL HCL IN 100CM63 WATER = 1.275 MOL THEREFORE CONCENTRATION = 1.275mol/dm^3 my method is rather kind of long but you can understand well right? Mr or H2SO4 = 98

98g H2SO4 = 1 MOL
50g H2SO4 = 0.51 MOL

1 MOL H2SO4 = 1 MOL HCL
0.51 MOL H2SO4 = 0.51 MOL HCL

NO OF MOL HCL IN 40OCM^3 WATER = 0.51 MOL
NO OF MOL HCL IN 100CM63 WATER = 1.275 MOL

THEREFORE CONCENTRATION = 1.275mol/dm^3

my method is rather kind of long but you can understand well right?

]]> By: yumi http://www.simplechemconcepts.com/o-level-chemistry-challenging-mole-calculation-questions/comment-page-1/#comment-6884 yumi Tue, 01 Jun 2010 07:57:29 +0000 http://www.simplechemconcepts.com/?p=3150#comment-6884 1.28 mol/dm3 (to 3 sf) 1.28 mol/dm3 (to 3 sf)

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