RevinB213206 RevinB213206
  • 03-11-2022
  • Physics
contestada

How much heat is necessary to change 500 g of ice at - 10°C to water at 20°C ?

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CyannaN672878 CyannaN672878
  • 03-11-2022

Apply the specific heat equation:

q= mcΔT

q= heat energy

m= mass = 500g

c = specific heat capacity = 4.186 J/gC

ΔT= change in temperature = 30°

q= 500g x 4.186 J/gC x 30 C = 62,790 Joules

Then apply the latent heat formula:

q= mL

L = latent heat fusion, vaporization, etc for the substance = 334 J/g

q = 500 x 334 J/g = 167,000 J

Total q = 62,790 + 167,000 = 229,790 J

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