Question: Q4 - Dissolution A sugar cube (Lo=1cm) is dissolving in a cup of tea. The mass transfer coefficient, kc, to the tea is 5.0105m/s. You

Q4 - Dissolution A sugar cube (Lo=1cm) is dissolving in a

Q4 - Dissolution A sugar cube (Lo=1cm) is dissolving in a cup of tea. The mass transfer coefficient, kc, to the tea is 5.0105m/s. You may assume lumped capacitance is valid. The molecular weight of sugar is 342.3 and its density is 1580.6kg/m3. The concentration of sugar in the tea, c is effectively zero. How long will it take for the cube to dissolve away? Hint Since the sugar cube is dissolving, its concentration remains constant at cas, but its volume and surface area change. As=6L2 and V=L3

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