New Formulas for Estimating the Temperature of Mixture of Hot Systems

Illustrations and questions based on the equation “heat gained equals heat lost” have always been restricted to mixing systems at two different temperatures. This article shows how to extend the above equation to systems with more than two different temperatures. Using the current formula the following procedures are generated. The method of mixing two systems at a time (pair mixing) is illustrated. The technique of taking any of the systems (preferably the one with the lowest temperature) as the only heat gainer is also illustrated. A new formula based on constancy of heat content is introduced. The various methods are tested and found to be perfect and should be incorporated into the teaching and learning in this aspect of heat study.