7. Classify each process as exothermic or endothermic and indicate the sign of AH°rxn. a. ice melting b. a sparkler burning c. acetone evaporating from skin

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A: The heat energy that would be needed to raise the temperature of a 15.0 g sample of iron [C=0.448…

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A: Given, Mass of stell (m) = 91.2 g Initial temperature = 25°C Final temperature = 76.1°C Change in…

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Q: A 122mL sample of water at 97 C is added to a beaker containing 255mL of water at 23.0 C. Calculate…

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A: Inorder to convert kilocalorie to joule, multiply the energy value by 4184. So, 1 kcal = 4184 J 1…