Which is better from a sustainability perspective—recycling or downcycling? Why?
What will be an ideal response?
Recycling is better, because it conserves the complexity of the original material and/or its functionality. This is reflected by Principle #6 of the 12 Principles of Green Engineering (Box 7.7).
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Define a worst-case boundary.
What will be an ideal response?
If the value of the binary interaction parameter is k12=0.1, determine the values of the Peng-Robinson parameters am and bm that you would use to model a vapor phase mixture composed of 65 mol% component 1.
A pair of compounds, identified as 1 and 2, have the following properties:
You have five known VLE data points at 325 K. Your task is to generate the Pxy diagram describing all VLE mixtures of these compounds at 325 K, using phi-phi modeling and the Peng-Robinson equation.
As it sets up, grout _____, thus filling voids under the bases and bedplates.
a. contracts b. expands c. shrinks d. settles
A ____ material only allows certain materials to pass through
a. Semipermeable c. Diffused b. Permeable d. Acidic