Physics 5054 · O Level · Melting, boiling and evaporation

Melting, boiling and evaporation — practice question

An ice-cube tray contains $30\,\text{g}$ of water. The specific latent heat of fusion of ice is $3.3 \times 10^5\,\text{J kg}^{-1}$. Calculate the thermal energy that must be removed from the water at $0\,^\circ\text{C}$ so that it becomes ice at $0\,^\circ\text{C}$.

  • A$9.9 \times 10^3\,\text{J}$
  • B$1.1 \times 10^4\,\text{J}$
  • C$9.9 \times 10^6\,\text{J}$
  • D$1.1 \times 10^7\,\text{J}$

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