Follow the steps of the Systematic Approach of Section 14.4—that is, (1) identify the system, (2) determine whether the process is batch or rate, (3) construct a schematic diagram with inputs and outputs, (4) Label known material quantities or rates of flow and so on. A batch of 250 lb of sulfuric acid (90 percent concentrate) is needed. Unlimited supplies of 98 and 40 percent concentrates of sulfuric acid are available. How much of each is needed to produce the required 90 percent concentrate?
What will be an ideal response?
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