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2. A labelled flowchart of a continuous steady-state two-unit process is shown in Figure 2. You need to perform DFA for the systems to calculate the unknown flow rates and compositions of streams 1,2 , and 3. (10 Marks) 1. An experiment on the growth rate of certain organisms requires an environment of hu- P3 Material Balance (38 Marks) mid air enriched in oxygen. Three input streams are fed into an evaporation chamber to produce an output stream with the desired composition given as follows: A. Liquid water, fed at a rate of 20.0cm3/min The output gas is analyzed and is found to contain 1.5 mole\% water. Draw and label a C: Pure oxygen with one-fifth of stream B's molar flow rate B: Air (21 mole %O2, the balance N2) flowchart of the process, perform DFA, and calculate all unknown stream variables. The density of water =1.00g/cm3 The molecular weight of water =18.02g/mol (10 Marks) P2 Operation and Process Flowchart What is that in circles A, B, C, and D in Figure 1