A block of iron initially at 800 °C is to be quenched in a water tank initially at 10 °C and 100 kPa (same as atmospheric pressure). If the iron block weighs 20 kg, what is the minimum amount of water required to avoid boiling. The water pressure is kept at 100 kPa (same as atmospheric pressure).

2) Two glass bulbs, one on the left with a volume of 2 liters and the other on the right with avolume of 6 liters, are connected to one another by a thin tube that is initially closed by astopcock. The bulb on the left has 0.1 moles of ideal gas, and the bulb on the right isevacuated. The system is in thermal equilibrium with the surroundings at 300K. When thestopcock is opened, the gas flows out to fill both bulbs. Calculate A for this process. If wewere to insert a propeller to extract work as the gas flows from left to right, what is themaximum amount of work that we could possibly extract?