Question: What is the latent heat of fusion if 2000 J of energy is required to melt 0.5 kg of ice? (2021)
Options:
2000 J/kg
4000 J/kg
1000 J/kg
500 J/kg
Correct Answer: 2000 J/kg
Exam Year: 2021
Solution:
Latent heat of fusion (L) = Q / m = 2000 J / 0.5 kg = 4000 J/kg.
What is the latent heat of fusion if 2000 J of energy is required to melt 0.5 kg
Practice Questions
Q1
What is the latent heat of fusion if 2000 J of energy is required to melt 0.5 kg of ice? (2021)
2000 J/kg
4000 J/kg
1000 J/kg
500 J/kg
Questions & Step-by-Step Solutions
What is the latent heat of fusion if 2000 J of energy is required to melt 0.5 kg of ice? (2021)
Step 1: Understand that latent heat of fusion is the amount of energy needed to change a substance from solid to liquid without changing its temperature.
Step 2: Identify the total energy (Q) required to melt the ice, which is given as 2000 J.
Step 3: Identify the mass (m) of the ice that is being melted, which is given as 0.5 kg.
Step 4: Use the formula for latent heat of fusion: L = Q / m.
Step 5: Substitute the values into the formula: L = 2000 J / 0.5 kg.
Step 6: Calculate the result: L = 4000 J/kg.
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