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Given: Specific Heat capacity of Water = 1 cal/(g C) Specific heat capacity of ice: cice= 0.5 cal/(gC) Latent heat capacity of ice is Lice
Given: Specific Heat capacity of Water = 1 cal/(g C) Specific heat capacity of ice: cice= 0.5 cal/(gC) Latent heat capacity of ice is Lice = 80 cal/g Specific heat capacity of Copper = 0.092 cal/(g C) Specific heat capacity of Aluminum = 0.215 cal/(g C) Question 2: In order to extract the maximum flavor in the shortest amount of time, your local fast-food purveyor has decided to brew its coffee at 90 C and serve it quickly so that it has only cooled down to 85 C. While this may be economically sensible, it is negligent and dangerous from a safety standpoint. Water (which is what coffee mostly is) at 85 C is hot enough to cause third-degree burns (the worst kind) in two to seven seconds. You decide to add ice cubes to your coffee to cool it down to a more reasonable 55 C so you will be able to drink it sooner. (Watery brew be damned. You need your caffeine now.) Question: How many ice cubes each with mass 23.5 g and at an initial temperature of 18.5 C should you add to your 355 mL cup of coffee to accomplish your thermal goal? Suggestion: Think
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