Why is ΔU = 0 for isothermal?

Started by G O D I V A | Last post by researcher November 22, 2009, 09:56:05 AM

Why is calcium white? What causes color at the level of an atom or a molecule?

Started by KüssendistSpaß101 | Last post by Borek July 13, 2013, 03:19:03 AM

Why is Copper Red? and Caesium golden?

Started by kkjc2 | Last post by kkjc2 December 03, 2005, 05:24:53 PM

why is dimethyl ketene colorful ?

Started by bluemonster | Last post by AWK July 19, 2007, 04:08:47 AM

Why is ethane the simplest fibre?

Started by antimatter101 | Last post by antimatter101 October 30, 2012, 04:31:20 AM

Why is HCl a weaker acid than HF in glacial acetic/ethanoic acid?

Started by AhBeng | Last post by cck05 November 09, 2009, 10:16:58 AM

Why is PH3 a polar molecule when P and H have the same electronegativity?

Started by AhBeng | Last post by parranoya September 28, 2012, 01:24:05 PM

why is Rate law like that???

Started by 2810713 | Last post by 2810713 February 14, 2006, 03:57:06 AM

Why is the autoignition temperature of Hydrogen so high? 530 C

Started by curiouscat | Last post by Enthalpy August 12, 2015, 02:27:46 PM

Why is the Kinetic Isotope Effect (H/D) larger for OH > NH > CH

Started by questor | Last post by Enthalpy May 07, 2012, 07:12:20 AM

Why is they sky blue?

Started by aqhl | Last post by pantone159 October 19, 2006, 12:25:17 AM

Why is TΔS part of the Gibbs Free Energy formula?

Started by Technicalhuman | Last post by Yggdrasil July 23, 2013, 07:12:55 PM

why paraffin oil soaked in mineral wool in cracking setup?

Started by kenny1999 | Last post by kenny1999 May 13, 2011, 11:39:56 AM

why this enzyme catalyzed reaction is zero order reaction

Started by Lisa_JO | Last post by Babcock_Hall February 29, 2020, 08:49:42 AM

Wierd Entropy

Started by Vicstar | Last post by Yggdrasil February 02, 2008, 12:19:37 PM