Question

Answer these (AS) (a) How much energy is transferred when I g. of boiling water at 100°C condenses to water at 100°C? (b) How much energy is transferred when 1 g. of boiling water 100°C cools to water at 0°C? (c) How much energy is released or absorbed when I g. of water at 0°C freezes to ice at 0°C? (d) How much energy released or absorbed when 1 g. of steam at 100°C cools to ice at 0°C?​

Answer 1

Answer:

So the energy needed for 1 gram of water is 540 cal. This is the heat needed for the conversion of boiling water at 100 $^\circ C$ to water at 100 $^\circ C$. To change the water to 0 $^\circ C$ the transfer of energy will be an additional 100 cal. $540 + 100 = 640\,cal$.

Explanation:

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