Determine the amount of thermal energy provided by heating to raise the temperat

Question

Determine the amount of thermal energy provided by heating to raise the temperature of 0.50 kg of water by 10 ?C. The specific heat of water c = 4180 J/kg??C. Then determine the amount of thermal energy provided by heating to raise the temperature of 0.50 kg of ethanol by 10 ?C. The specific heat of ethanol c = 2480 J/kg??C. Also determine the amount of thermal energy provided by heating to raise the temperature of 0.50 kg of iron by 10 ?C. The specific heat of iron c = 450 J/kg??C.

Express your answers to two significant figures and include the appropriate units.

Explanation / Answer

For Water

Amount of thermal energy required is Q = m*S*dT = 0.5*4180*10 = 20900 J

For Ethanol

Amount of thermal energy required is Q = m*S*dT = 0.5*2480*10 = 12400 J

For Iron

Amount of thermal energy required is Q = m*S*dT = 0.5*450*10 = 2250 J

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