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Glass is far inferior to paper, plastic and Styrofoam in terms of insulation. Thermal conductivity in terms of BTU/(feet - hour - degrees F) is 1.82 for glass, 0.09 for paper, 0.06 for Styrofoam. The conductivity of plastics varies depending on the materials: for polypropylene and polycarbonate, the thermal conductivity values are 0.69 and 0.35, respectively.
A chemistry student dissolves 4.51 grams of sodium hydroxide in 100.0 mL of water at 19.5Â°C (in a calorimeter cup). As the sodium hydroxide dissolves, the temperature of the surrounding water increases to 31.7Â°C. Determine the heat of solution of the sodium hydroxide in J/g.his statement could be placed in equation form as. Q ice = - Q surroundings = -Q calorimeter. The role of the Styrofoam in a coffee cup calorimeter is that it reduces the amount of heat exchange between the water in the coffee cup and the surrounding air.