Identify the two types of hair that comprise wool, where each comes from, and the function of each
What will be an ideal response?
The two types of hair that comprise wool are:
1 . The coarse outer hair that comes from the primary follicles, and which help keep water away from the skin of the animal
2 . The fine inner hairs that come from the secondary follicles, and which provide the insulation that keep the animal warm
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To the left of the Txy plot are five overall compositions, pressures, and temperatures for a mixture of R-245fa (1) + isopentane (2). For each combination, list the equilibrium phases, what they are (LLE, VLE, etc) and what are the compositions (in terms of mole fractions) of each of the equilibrium phases.
Z1 = 0.2; P = 1.0 bar; T = 375K
Be sure to provide proper and adequate support for the duct system according to ____.
A. installation instructions B. local building codes C. state building rules D. environmental regulations
How many phase rule variables must be specified to fix the thermodynamic state of each of the following systems?
(a) A sealed flask containing a liquid ethanol-water mixture in equilibrium with its vapor. (b) A sealed flask containing a liquid ethanol-water mixture in equilibrium with its vapor and nitrogen. (c) A sealed flask containing ethanol, toluene, and water as two liquid phases plus vapor.
The total resistance of a series circuit with resistances of 18 and 9 is:
A) 18 × 9 = 162 B) 18 — 9 = 9 C) (18 × 9 )/(18 + 9 ) = 6 D) 18 + 9 = 27