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 solution of potassium chromate (K2CrO4) is to be used to produce K2CrO4 crystals using an evaporator and crystallizer/filter. A 38 percent solution is fed to the evaporator. The stream leaving the evaporator is 48 percent K2CrO4 and is fed to the crystallizer/ filter. Pure K2CrO4 crystals are produced and the remaining solution is 44 percent K2CrO4. This solution is cycled back to the evaporator. If 1.2 t/h of pure crystals are needed, calculate the total input to the evaporator, the feed rate to the
crystallizer/filter, and the water removed from the evaporator.
What will be an ideal response?
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The operations of addition, subtraction, multiplication, and division are performed with the four arithmetic keys and the ____________________ key.
Fill in the blank(s) with the appropriate word(s).
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A) Based on age B) Based on experience C) Based on similar skills D) Based on education level
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What will be an ideal response?
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In a closed-loop system, the plastic water pipes that are buried in the Earth are called ____.
A. ground loops B. thermal loops C. water loops D. both a and c
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