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Harvard University Operations And Supply Chain Management Assignment Help - Chemical Engineering


Question - Strawberries contain about 15 wt% solids and 85 wt% water. To make strawberry jam, crushed
strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water
until the residue contains one-third water by mass.
(a) Draw and label a flowchart of this process.
(b) Do the degree-of-freedom analysis and show that the system has zero degrees of freedom (i.e.,
the number of unknown process variables equals the number of equations relating them). If you have
too many unknowns, think about what you might have forgotten to do.
(c) Calculate how many pounds of strawberries are needed to make a pound of jam.

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