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Calculate the energy required to raise the temperature of 12 g iron from 35°C to 210°C. For iron c = 0.45 J per degree per gram. |
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Answer» Q = m x c x ΔT Q = heat gained m = mass of substance = 12g c = heat capacity of iron = 0.45J /g°C ΔT = change im temperature = ( 210 -35) = 175°C Now put all the given values in the above formula, we get the amount of heat required. Q = 12g x 0.450J /g°C x 175°C Q = 945J Therefore, the amount of heat required is, 945J |
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