Thermodynamics: You have a (mostly) insulated carafe in whichyou store your coffee. Coffee can be modeled as saturated water forthis problem. The internal volume of your carafe is 1 L and youseal the lid when it contains 900 g of coffee (mostly liquid, somevapor) at 90 â—¦C.
1. What is the mass [g] of water vapor in the carafe?
You are very busy at work and forget to drink your coffee. Bythe end of the day, it has cooled to 35 â—¦C.
2. How much energy [kJ] was lost through the walls of thecarafe?
3. What is the pressure [kPa] of your now barely warmcoffee?
