12. According to the zeroth law of thermodynamics, which of the following cannot occur? A room being heated by an air conditioner.
A temperature below the coldest item in an area.
A cooler full of ice chilling a soda sitting on top of it.

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.