Answer to Question #205753 in Mechanics | Relativity for marie

Question #205753

A 500 g bar of ice is initially at -25 °C. Calculate the amount of energy required to vapourize 25% of the substance at 100 °C.


1
Expert's answer
2021-06-11T14:15:45-0400

Mass of ice,

Initial temperature of ice, =

Final temperature,

Mass of ice to be vapourized,

We know specific heat of ice is 0.5 cal/gK,

specific heat of water=1cal/gK

Also latent heat of fusion= 80 cal/g

latent heat of vaporization=540 cal/g

Ice(248K)→ice(273K)→water(273K)→water(373K)→steam(373K)

Total heat absorbed,



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