The constant-pressure heat capacity of solid molybdenum varies with temperature. Its value can be estimated by...

 

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The constant-pressure heat capacity of solid molybdenum varies with temperature. Its value can be estimated by Equation 2-1: p=13.2+(1.19 10) 7+ (2.5710) 7 Equation 2-1 where c, is given in J mol K and T' is given in K. (i) Sketch a plot of c, versus absolute temperature from 300 K to 1000 K. Exact values are not required. Label your axes and include units. (ii) Add lines to your graph to illustrate how much heat is required to heat this material from 400 K to 800 K. (iii) Explain why integration is required to calculate the amount of heat transferred to change the temperature of a material with a heat capacity that is not constant. iv) If we use a constant heat capacity of the material taken at 400 K to estimate the total heat required to raise the temperature from 400 K to 800 K, how will our answer for the amount of heat required compare to the actual value calculated using the full polynomial expression? The constant-pressure heat capacity of solid molybdenum varies with temperature. Its value can be estimated by Equation 2-1: p=13.2+(1.19 10) 7+ (2.5710) 7 Equation 2-1 where c, is given in J mol K and T' is given in K. (i) Sketch a plot of c, versus absolute temperature from 300 K to 1000 K. Exact values are not required. Label your axes and include units. (ii) Add lines to your graph to illustrate how much heat is required to heat this material from 400 K to 800 K. (iii) Explain why integration is required to calculate the amount of heat transferred to change the temperature of a material with a heat capacity that is not constant. iv) If we use a constant heat capacity of the material taken at 400 K to estimate the total heat required to raise the temperature from 400 K to 800 K, how will our answer for the amount of heat required compare to the actual value calculated using the full polynomial expression?

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Answer i Sketch of Cp vs Temperature Heres a sketch of the plot of Cp constantpressure heat capacity versus absolute temperature T from 300 K to 1000 ... View the full answer