An instapot (a closed pot that can cook with both high temperatures and pressures) is being used to cook some soup. It has overheated and over pressurized, and a safety valve on the top opens releasing steam to the atmosphere for three minutes, cooling the system. During the cooling time, there was no power supplied to the pot, and you can assume it is well insulated (they are). Simplify the appropriate the first law equation for this situation as best you can, assuming you can neglect the velocity of the steam.

Knowing that you lose 200 grams of steam over the three minute period, and assuming that the steam leaving the instapot is saturated vapor at 100C, and the Cv of the stew inside is roughly that of water (4.2 KJ/Kg/K) and assume that you have about 200 grams of stew (its about a 2L pot size). What type of temperature drop do you expect happened during the shutdown?