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The following tables contain information that you will need to solve practice problems.

Answer all questions using complete sentences and solve all problems showing all work in order to receive full credit.

Table 1: Specific Heat Capacity of Selected Substances

Substance Specific Heat Capacity J/(kg * C°)

copper 387

ice 2220

lead 128

mercury 139

silver 236

water 4,186

Table 2: Latent Heat Table

Substance Latent Heat of Fusion J/kg Latent Heat of Vaporization J/kg

lead 0.25 E5 8.68 E5

mercury 0.12 E5 2.7 E5

water 3.33 E5 22.6 E5

.How much heat is needed to melt 10.0 kg of lead at its melting point?

.How much heat is needed to vaporize 10.0 kg of mercury at its boiling point?

.A temperature of a 0.25 kg sample of copper decreases from 75.0 °C to 25.0 °C. How much heat flows out of the copper sample?

.When 8,000 joules of heat are removed from a sample of mercury, the temperature of the sample is decreased from 40 °C to 15 °C. What is the mass of the sample?

.Thermal energy of a substance is the sum of the potential energy and kinetic energy of the particles that make it up. Let’s say you had a hot cup of water and a cold cup of water, and then mixed them. Illustrate the behavior of the particles before and after thermal equilibrium is reached.