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2 cards from this section. Quick, good the night before a test.
What is latent heat?
What happens during melting or boiling?
Name the two types of latent heat.
Think about solid to liquid and liquid to gas changes.
What is latent heat?
Connect it with phase changes.
True or False: The latent heat of fusion is greater than the latent heat of vaporization.
Consider energy needed for each phase change.
A 1 kg block of ice is at -10°C. Calculate the total energy needed to turn it into steam at 100°C. Use the appropriate specific heat capacities, latent heats of fusion and vaporization for your calculations.
Break it into steps and use Q = mL for phase changes.
Consider a refrigeration unit that removes heat from indoor air at 32°C. If it has a cooling capacity of 2500 J/s, how much water could be frozen if it operated continuously for 1 hour?
Set up your calculation with total energy over time, then relate it to mass.
4 more questions in this section. Enroll free to practise them all.
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