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A soccer player twists her ankle on the field. The atheltic trainer applies an ice bag with 260 g of ice inside. How much heat, in joules, wil be absorbed, to melt all the ice to 0°C?

Respuesta :

dsdrajlin

Answer:

Q = 8.68 × 10⁴ J

Explanation:

We can calculate the heat required to melt a mass of ice, that is, to change it from the solid phase to the liquid phase, at a constant temperature of 0 °C, using the following expression.

Q = ΔH°f × m

where,

  • Q is the heat absorbed
  • ΔH°f is the standard enthalpy of fusion (ΔH°f for water: 334 J/g)
  • m is the mass of ice

Q = ΔH°f × m

Q = 334 J/g × 260 g

Q = 8.68 × 10⁴ J

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