QUESTION THREE (20 MARKS) 3 a) Define specific latent heat of fusion [2marks] b) 5 kg...

  

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QUESTION THREE (20 MARKS) 3 a) Define specific latent heat of fusion [2marks] b) 5 kg of ice at a temperature of -4° C is converted to water at a temperature of 75° C. Calculate the quantity of heat used. (Take specific heat capacity of ice 2100 J/kg/k, specific latent heat of fusion of ice 1.7×105J/Kg, specific heat capacity of water 4200 J/kg/k) [7marks] c i) Explain why heat transfer is faster in metal conductors than in non metals ii) Explain the three modes of heat transfer d) Differentiate between evaporation and boiling [2marks] [6marks] [3 marks] QUESTION THREE (20 MARKS) 3 a) Define specific latent heat of fusion [2marks] b) 5 kg of ice at a temperature of -4° C is converted to water at a temperature of 75° C. Calculate the quantity of heat used. (Take specific heat capacity of ice 2100 J/kg/k, specific latent heat of fusion of ice 1.7×105J/Kg, specific heat capacity of water 4200 J/kg/k) [7marks] c i) Explain why heat transfer is faster in metal conductors than in non metals ii) Explain the three modes of heat transfer d) Differentiate between evaporation and boiling [2marks] [6marks] [3 marks]

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Answer 3 a The specific latent heat of fusion is the amount of heat required to convert the unit mass of the substance from the solid to the liquid st... View the full answer