(a) State two factors that affect the rate of evaporation of a liquid.

(b) Explain the term latent heal.

(c) Explain each of the following phenomena:

(i) On a dry day, water in a clay pot is cooler than water in a rubber container:

(ii) Cooking of food is faster in a pressure cooker than in an ordinary pot.

(d) A 40 V electric heater is used to supply a current of 12 A for 1400 seconds to a body mass of 1.5 kg at its melting point. The body melts and its temperature rises by 60°C in an extra 1.2 minutes, Calculate the:

(i) Latent heat of fusion of the body

(ii) Specific heat capacity of the body.

(e) State two differences between evaporation and boiling.

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EdnaOlosunde
3 months ago

the table is not a full one

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