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Grade: 12 

                        
the specific heat of a substance varies with temperature according to c=0.20+0.14T+0.023T²,with T in °C and c in cal÷kg K find the energy required to raise the temperature of 2.0g of this substance from 5.0°C to 15°C.
6 years ago

Answers : (1)

Shaik Irfan Kareem Ali
33 Points 
							q=mc(t2-t1)
c=integrate c(T) from 5 to 15
c=40.92cal/kg
q=0.002(40.92)(10)
q=0.82 cal
6 years ago
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