What is the latent heat of vaporization of water if 540 J of energy is required

Practice Questions

Q1
What is the latent heat of vaporization of water if 540 J of energy is required to convert 100 g of water at 100°C to steam? (2021)
  1. 540 J/g
  2. 54 J/g
  3. 5.4 J/g
  4. 0.54 J/g

Questions & Step-by-Step Solutions

What is the latent heat of vaporization of water if 540 J of energy is required to convert 100 g of water at 100°C to steam? (2021)
  • Step 1: Understand the problem. We need to find the latent heat of vaporization of water.
  • Step 2: Identify the given values. We have 540 J of energy (Q) and 100 g of water (m).
  • Step 3: Recall the formula for latent heat of vaporization: L = Q / m.
  • Step 4: Substitute the values into the formula: L = 540 J / 100 g.
  • Step 5: Perform the division: 540 J divided by 100 g equals 5.4 J/g.
  • Step 6: Conclude that the latent heat of vaporization of water is 5.4 J/g.
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