Calorimetry Data Sheet Part A: Specific Heat of a Metal Unknown Number Run # 1.

Question

Calorimetry Data Sheet Part A: Specific Heat of a Metal Unknown Number Run # 1. Mass of Jar and Metal 2. Mass of Empty Jar 3. Mass of Calorimeter 30.000 1l200 37.6291 g Mass of Calorimeter and Water 5o 116.378 100.636 6 71 5. Mass of Metal 6. Mass of Water 7. Initial Temp. of Water in Calte 8. Initial Temp. of Metal (boiling water) 9. Final Temp. of Metal and Water 113 77.0°C Z33-c -730 °C -717 °C 23.1 °C 0 -c °C 11· ATmeta. (Tfinal-Tinda) 12. Hwaer 13. Hmetal 14. Specific Heat of Metal 15. Approximate Molar Mass of Metal J/(g.oC) -g/mol -g/mol 16. Average Specific Heat of Metal 17, Range as % of Average Show calculations

Explanation / Answer

as ,

heat given by warm water q = 100.63g * 23.90 * 4.18 j/g 0C = 10053.13 J

heat absorbed by water in calorimeter q= 100.63*27*4.18 = 11357.10 j

difference absorbed by calorimeter = 11357.10 - 10053.13 = 1303.9 J

calorimeter constant = 1303.9 / 27 = 48.29 J/ 0C

qlost,metal=q gained

so, q lost, metal =q gained, water + q gained, calorimeter

so , (mass)(dt)(Cp, metal)= (mass)(dt)(Cp, water) + (dt of water * Calorimeter constant)

10.8 * 73 * X = (100.63 * 3.1 * 4.18) + (3.1 * 48.29)

X = 1.84 J/g 0C

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