A liquefied mixture of n-butane, n-pentane, and n-hexane has the following composi- tion in percent: n-C,H10 50 n-C;H12 30 n-C,H14 20 For this mixture, calculate: (a) The weight fraction (b) The mole fraction (c) The mole percent of each component (d) The average molecular weight

2. An incinerator handles 80 kg per hour benefin (C13H16F3N3O4) and has a stack gas containing 5% oxygen by volume on a dry basis. Determine the percent excess air (both O2 and N2 gases as mol per hour and kg per hour) provided to the reactor. (Elemental weights: C=12 g, N=14 g, O=16 g, and F=19 g).

Using the provided ternary phase diagram 1) Determine the EXACT composition of point a2. 2) Determine the maximum amount of (in moles) of pure E that can be added to a 10 mol mixture at point a2 to maintain a two-phase system?

3. The microstructure of a Cu-Ag alloy at 779°C consists of primary a (with mass fraction of 0.73) and eutectic structure (with mass fraction of 0.27). Determine the composition of this alloy. Temperature (°C) 1200 A 1000 Ⓒ 800 600 400 200 a C (Cu) B 8.0 (CE) -Solidus Solvus 20 20 a +L Composition (at% Ag) 40 -Liquidus 779°C (T) a+B 40 60 Composition (wt% Ag) T Liquid 60 71.9 (C₂) 80 80 B+L 91.2 (Cpg) 100 T 2200 G TITINTI B ++ H 2000 1800 F 1600 1400 1200 1000 800 600 400 100 (Ag) Temperature (°F)

Calculate the vapor phase mole fractions in equilibrium with a liquid hydrocarbon binary mix of 42% carbon tetrachloride and 58% trichloroethylene (use Antoine equation to calculate vapor pressures), for a system at 60°  Also, calculate what is the total system pressure?