The fourth Edition presents new problems from various industries such as water treatment, oil adn fats, environmental pollution, and heavy chemicals. Key Features: Symbols and conversions updated as per the recommendations made by IUPAC. Development of a cascade steam balance with optimum energy consumption. Industry innovations in the form of stoichiometric problems such as new process for production of formaldehyde, recycling of flue gases of a boilder with fuel gas, etc. Use of MATHCAD to solve problems. New problems on purging of chemical equipment with inert gases, for safety. Table of Content: Chapter 1 Dimensions and Units Chapter 2 Basic Chemical Calculations Chapter 3 Material Balances without Chemical Reactions Chapter 4 Equations for Chemical Reactions Chapter 5 Energy Balances Chapter 6 Stoichiometry and Unit Operations Chapter 7 Combustion Chapter 8 Stoichiometry and Industrial Problems Chapter 9 Stoichiometry and Digital Computation Appendix I Appendix II Appendix III Appendix IV Index