For a mixture with the masses listed in the chart below, calculate the mass fractions and mole fractions. Please show all work. species CH4 CH3 CH2 CO CO2 O 02 H H2O H2O2 mass 0.23 0.09 0.06 0.31 0.37 0.11 0.23 0.08 0.27 0.14

Given the table below and your judgement for extreme operational conditions, select polymers for the following applications respectively: a dry ice bucket (operating temperature of -78C), a teeth aligner, a hair dryer (operating temperature range of 60-80C) and a phone case. Table 15.2 Melting and Glass Transition Temperatures for Some of the More Common Polymeric Materials Material Polyethylene (low density) Polytetrafluoroethylene Polyethylene (high density) Polypropylene Nylon 6,6 Polyester (PET) Poly(vinyl chloride) Polystyrene Polycarbonate Glass Transition Temperature [°C (°F)] -110 (-165) -97 (-140) -90 (-130) -18 (0) 57 (135) 69 (155) 87 (190) 100 (212) 150 (300) a. Polypropylene, PET, PTFE, Polypropylene O b. PTFE, HDPE, HDPE, polypropylene c. LDPE, PTFE, Nylon, polypropylene O d. Nylon, PET, HDPE, PVC Oe. HDPE, LDPE, LDPE, PTFE Melting Temperature [°C (°F)] 115 (240) 327 (620) 137 (279) 175 (347) 265 (510) 265 (510) 212 (415) 240 (465) 265 (510)

What is Chemical Engineering principle

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