calori ml. Part IV. Specific Heat Capacity of an Unknown Metal 51. Volume of wat

Question

calori ml. Part IV. Specific Heat Capacity of an Unknown Metal 51. Volume of water 52. Calculate the mass of water 22.2 do 53. Mass of unknown metal 54. Initial temperature of water in calorimeter, T 55. Initial temperature of metal before placing in calorimeter, T 56. Final temperature of the water, T 57 Final temperature of the metal, T 100.0c 20-oc "C 58. Calculate the specific heat capacity of the metal mutal J/c) (106-30.) 23924.9 73 S 25(01) 17352342 ppgi-y lY4(ao.WE24.4) /g°C 59. Calculate the heat capacity of the unknown metal 259.09 +23925 , 2514-ogre 60. Based on your calculated specific heat capacity, what unknown metal is the washer most likely made of? 61. What is the percent error between your calculated specific heat capacity and the specific heat capacity of the metal you identified above reported in the literature? What are some of the possible sources of error in this experiment. If the metal is not pure, skip th e %calculation par 259 .og 2392 2514 03 % error

Explanation / Answer

Mass of water= 100 gm, mass of metal = 82.4 gm

Here metal looses heat and water gains heat

Heat lost by metal = heat gained by water

Mass of metal* specific heat of metal* change in temperature = mass of water* specific heat of water* change in temperature

Water changes its temperature from 24.4 to 30.6 deg.c while metal changes its temperature form 100 deg.c to 30.6, the equilibrium temperature.

Let Cp =specific heat of metal

82.4*Cp*(100-30.6)=100*4.184*(30.6-24.4)

Cp =0.4536 J/gm.deg.c

heat capacity of metal = Cp* mass of metal = 0.4536*82.4 J/deg.c =37.4 J/deg.c

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