mannychicago05 mannychicago05
  • 22-07-2020
  • Physics
contestada

How much heat is needed to melt 2.5 KG of water at its melting point? Use Q= mass x latent heat of fusion.

How much heat is needed to melt 25 KG of water at its melting point Use Q mass x latent heat of fusion class=

Respuesta :

Muscardinus Muscardinus
  • 27-07-2020

Answer:

Q = 832 kJ

Explanation:

It is given that,

Mass of the water, m = 2.5 kg

The latent heat of fusion, L = 333 kJ/kg

We need to find the heat needed to melt water at its melting point. The formula of heat needed to melt is given by :

Q = mL

[tex]Q=2.5\ kg\times 333\ kJ/kg\\\\Q=832.5\ kJ[/tex]

or

Q = 832 kJ

So, the heat needed to melt the water is 832 kJ.

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