Q6 of 22 Page 17

Answer these. (ASI)

How much energy is transferred when I gm of boiling water at 100oC cools to water at 0oC?

Given: -

Mass, m = 1g


Initial temperature = 100oC


Final temperature = 0oC


Change in temperature, ∆T = 100 oC


The specific heat capacity of water is, S = 1cal/g°C


We know that Q = mS∆T


Hence, energy transferred when 1g of boiling water at 100oC cools to water at 0oC: -


⇒ Q = mS∆T


⇒ Q = 1 × 1 × 100


⇒ Q = 100cal


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