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Specific Heat Capacity

How much ener...

Question

How much energy is required to rise the temperature of $100 g$ water from $24^{o} C$ to $9^{o} C$ . The specific heat of water is $1.0 c a l g^{- 1} C^{- 1}$ .

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Solution

Given : $m = 100 g$ $S = 1.0 c a l / g C$
Change in temperature $Δ T = 24 - 9 = 15^{o} C$
Heat energy $H = m S Δ T$
Or $H = 100 \times 1 \times 15 = 1500 c a l$

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