Some two-phase metal alloy is known to be composed of α and β phases; mass fractions of these phases are 0.77 and 0.23, respectively. room-temperature electrical resistivity and density data for these phases are tabulated below. using this information, calculate the electrical resistivity (in ω-m) of the alloy at room temperature.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.