Magnesium sulfate is often used in first-aid hot packs, giving off heat when dissolved in water.A coffee-cup calorimeter at 25°C contains 15.0 mL of water at 25°C. A 2.00-g sample of MgSO4 is dissolved in the water and 1.51kJ of heat are evolved. (You can make the following assumptions about the solution: volume =15.0 mL, density = l.00 g/mL, specific heat = 4. 18J/g ·0C.) (a) Write a balanced equation for the solution process. (b) Is the process exothermic? (c) What is qH2O? (d) What is the final temperature of the solution? (e) What are the initial and final temperatures in °F?

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Introduction and Basic Calculations in Multiphase Systems

Chemical calculations involve material and energy balance calculations which enable engineers to calculate material and energy requirements in various chemical processes. In addition to this, chemical calculations help to study the behavior and properties of gases, liquids, and their mixtures.