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. An industry is required to clean up 4.0 t of a by-product containing both toxic and inert material. The toxic content is 15 percent; the rest is inert. The by-product is treated with 45 t of solvent resulting in an amount of dirty solvent containing 0.35 percent toxic material and a discard containing 1.2 percent toxic material, some solvent, and all the inert materials. Determine the amount of dirty solvent produced, the percentage of solvent in the discard, and the percentage of toxic substance removed in the discard.
What will be an ideal response?
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____________________ is the attraction of water molecules to other water molecules
Fill in the blank(s) with the appropriate word(s).
Describe the two different types of analyzers and explain how each is designed to work.
What will be an ideal response?
Why is it recommended that an acetylene cylinder valve never be opened more than 1/2 turn?
A) To regulate the pressure to the torch handle B) To minimize the strain of the high cylinder pressures on the valve threads C) To prevent the valve from getting stuck in the fully opened position D) To allow rapid shutoff in the case of an accident
When connecting a large electrolytic capacitor to a circuit with a 100 VDC source, place the negative end of the capacitor ________
A) in either position; the polarity is not important B) towards the negative side of the source C) towards the positive side of the source