Re: pinhole heat confusion

Date view Thread view Subject view Author view

From: NFetter@aol.com
Date: Tue May 22 2001 - 22:31:26 PDT 

From: NFetter@aol.com
Message-ID: <ac.156570e6.283ca52e@aol.com>
Date: Wed, 23 May 2001 01:31:26 EDT
Subject: Re: pinhole heat confusion

Hi Paul,
Enthalpy is a measure of the internal energy of a system at constant
pressure. For large assemblies of molecules or atoms, this energy cannot be
measured or calculated. Chemists only refer to the change in enthalpy for a
chemical process or a change of state. For example, the enthalpy change when
water evaporates is about 41 kJ/mole.
Neil

Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Tue Oct 16 2001 - 12:22:23 PDT