Peter P. yahoo.com> writes: > 1a) Heat consumption for production vs. heat of combustion is about 3x10^7J vs > 1.4x10^8J. Sometimes I wonder why Murphy does not take a day off now and then. 3x10^7J is the heat of combustion. The heat requirement for production must be (much - 30% at least) less than this. 1.4*10^8J is wishful thinking. Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist