120 g of water at 25 ∘C^\circ\text{C}∘C is poured into an insulated cup. 50 g of ice at 0 ∘C^\circ\text{C}∘C is added to the water. The water is stirred until the temperature of the water has fallen to 0 ∘C^\circ\text{C}∘C.
14 g of ice remains unmelted.
The specific heat capacity of water is 4.2 J/g ∘C^\circ\text{C}∘C.
Which value does this experiment give for the specific latent heat of fusion of ice?
250 J/g250\text{ J/g}250 J/g
350 J/g350\text{ J/g}350 J/g
550 J/g550\text{ J/g}550 J/g
900 J/g900\text{ J/g}900 J/g
313 exam-style questions on CIE IGCSE Physics 2.2.3a Melting, boiling, condensation and solidification. Each one has a worked solution and a mark scheme showing where the marks go.