The temperature of a iron bar rises by 10.0°C when it absorbs 2.35 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of iron from these data.
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Specific Heat is the quantity of heat required to raise a gram of any substance by 1 degree Celsius.
Specific Heat formula is given by
where Δ Q is the heat gained or lost,
Δ T is the temperature difference.
Temperature difference is given by Δ T = (Tf - Ti), where Tf is the final temperature and Ti is the initial temperature.
∆Q=2.35kJ =2.35*10^3 J
Hence,specific heat of iron according to the above data is 447.61904 J/kg°C.
The answer is correct.Please check on the following website and specify where the mistake lies.
Answer can also be written in J/g°C.
Then,the specific heat value will be 0.44761 J/g°C.
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The temperature of a silver bar rises by 10.0 Co when it absorbs 1.23 kJ of heat. The mass of the bar is 525 g. Determine the specific heat of silver.
Q = c m ∆T
c = Q / m ∆T
c = (1.23 x 10^3 J)/[(0.525 kg)(10 °C)]
c = 234 J/kg-°C
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