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Professor DonatelliFebruary 28

Professor DonatelliFebruary 28 - Professor Donatelli Lucas...

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Professor Donatelli February 28, 2008 Lucas Kyriazidis 25.108/807 Ice Cream Analysis Peng, Klouda The purpose of this lab was to produce ice cream after calculating a specific amount of liquid nitrogen needed to cool the ice cream mixture. To calculate the amount of liquid nitrogen, the theory of the Conservation of Energy was used. The conservation of Energy states Energy in - Energy out + Energy gain = Δ Energy. This is used both for the ice cream mixture and the liquid nitrogen. For the ice cream mixture, there is no energy going into the system and no energy gained. So the new formula is 0- Energy out + 0= Mass ice cream Cp ice cream (ΔT)-mass water Δ Heat of Fusion. The given variables are the heat capacity (Cp), the mass of water and the heat of fusion of water. The mass of ice cream is weighed when given by the professor. To find the change of temperatures, the initial temperature is taken when the mixture is distributed. The final temperature is -10 degree Celsius. The same formula for the liquid nitrogen is used but instead of energy is going

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