Physics · Unit 1 · Heating processes · Kinetic particle model and specific heat capacity
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A laboratory technician monitors the temperature of a 1.8 kg sample of ice as it is heated at a constant rate. The graph shows the temperature–time relationship during the heating process. What is the total energy absorbed by the sample between 3.0 minutes and 7.0 minutes?
Two samples of different substances are heated. Sample P has mass 2.0 kg and requires 6.8 × 10⁵ J to completely melt at its melting point. Sample Q has mass 0.50 kg of the same substance and requires 1.7 × 10⁵ J to completely melt at the same temperature. What conclusion can be drawn about the specific latent heat of fusion for these samples?
A student measures the energy supplied to melt 250 g of ice initially at 0°C. After complete melting, 95 kJ of energy has been transferred to the sample and the resulting water temperature is measured at 12°C. What can be deduced about the specific latent heat of fusion for ice from this experiment?