How much energy is needed to melt 0.50 kg of ice at 0 °C? (specific latent heat of fusion of ice = 3.34 × 10⁵ J/kg)

Answer and explanation

Correct answer: A. 1.67 × 10⁵ J

  1. Step 1: Eh = ml.
  2. Step 2: 0.50 × 3.34 × 10⁵ = 1.67 × 10⁵ J.
Answer
1.67 × 10⁵ J.
Why not the others: 6.68 × 10⁵ J: the mass was doubled instead of halved. 3.34 × 10⁵ J: the mass was ignored. 1.5 × 10⁻⁶ J: the energy was inverted.

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