An ice cube is 50 grams in mass and at 0⁰C temperature. If the ice cube is dropped into an 80 grams Aluminum calorimeter cup which contains 200 grams of water, both at 30⁰C, what is the final equilibrium temperature? [c(Al) = 900 J/kg.⁰C, c(water) = 4186 J/kg.⁰C, Lf = 3.33 x 105 J/kg]

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