Just about everyone at one time or another has been burned by hot water or steam. This problem compares the heat input t

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Just About Everyone At One Time Or Another Has Been Burned By Hot Water Or Steam This Problem Compares The Heat Input T 1 (55.11 KiB) Viewed 33 times

Just about everyone at one time or another has been burned 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 100° C, 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 c = 4190 J/(kg-K). 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. ► View Available Hint(s) Q₁ = 6910 J Submit ✓ Correct We assumed that the skin remains at 34°C, although in an actual burn the local skin temperature can be raised significantly. Part C Previous Answers How much heat Q2 is transferred to the skin by 25.0 g of steam onto the skin? The heat of vaporization for steam is L = 2.256 × 106 J/kg. Express the heat transferred, in joules, to three significant figures. View Available Hint(s) Submit IVE ΑΣΦ Q2 = 6910 Previous Answers X Incorrect; Try Again; 4 attempts remaining J