In an Experiment to Measure the Thermal Conductivity of a Certain

question 68

Multiple Choice

In an experiment to measure the thermal conductivity of a certain material, a slab of material 10.0 mm thick separates a steam chamber from a block of ice with a square cross-section of 8.00 cm × 8.00 cm. In 5.00 minutes of running the experiment, 64.0 g of ice have melted. What is the coefficient of thermal conductivity of this material? The latent heat of fusion of water is 33.5 × 10⁴ J/kg.

• A) 0.130 W/m/K
• B) 0.250 W/m/K
• C) 0.440 W/m/K
• D) 0.620 W/m/K
• E) 1.10 W/m/K

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