Stoichiometric analysis may be defined as application of the laws of conservation of mass and energy to a system in conjunction with chemical relationships and physical measurements. For any system the amount of material and energy entering is equaled by the amount of material and energy leaving. If this balance is not achieved then errors in the method of making the balance or physical measurements must be found and corrected. Thus, the Stoichiometric analysis is a useful tool for insuring that accurate data are being obtained. Also this method of data analyzing is used to design new equipment and to enable comparisons to be made easily between different types of processes designed to perform the same basic task.