Question

Burns produced by steam at 100 degree C are much more severe than those produced by the same mass of 100 degree C water. To verify this, answer the questions below. Specific heat of water = 1.00 kcal/(kg degree C); heat of vaporization = 539 kcal/kg; specific heat of human flesh = 0.83 kcal/(kg degree C). Calculate the quantity of heat that must be removed from 7.00 g of 100degree C water to lower its temperature to 45.0degree C. kcal Calculate the quantity of heat that must be removed from 7.00 g of 100degree C steam to condense it and lower its temperature to 45.0 degree C. kcal Calculate the mass of human flesh that the quantity of heat produced in each case can raise from the normal 37.0 degree C to 4 Flesh is badly damaged at 50.0 degree C.)

Answer 1

= 7 1000-K(100-45.) ー 365 Colore. ち) 7 Ix (100-45) + 7K539 c ) rm elash tash 0. 83 K (4-37 58 - 41 S 8 26,2 0