Just about everyone at one time or another has been bumed by hot water or steam. This problem compares the heat input to your skin from steam as opposed to hot water at the same temperature. Assume that water and steam, initially at 10000, are cooled down to skin temperature, 34\"C, when they come in contact with your skin. Assume that the steam condenses extremely fast. The heat capacity of liquid water is r: = 4190 J/ [kg - K). Part A Under these conditions, which of the following statements is true? ANSWER: 0 Steam bums the skin worse than hot water because the thermal conductivity of steam is much higher than that of liquid water. 0 Steam burns the skin worse than hot water because the heat 0T vaporization is released as well. 0 Hot water burns the skin worse than steam because the thermal conductivity of hot water is much higher than that of steam. O Hot water and steam both burn skin about equally badly. Correct The key point is that the heat of vaporization has to be taken into account for the steam. Part B How much heat Q1 is transferred by 25.0 g of water onto the skin? To compare this to the result in the previous part. continue to assume that the skin temperature does not change. Express the heat transferred, in joules, to three significant figures. You did not open hints for this pan