PartD A 14 frm im kg) block of iron at 22 (vm \"circ vm C) is rapidly heated by

Question

PartD A 14 frm im kg) block of iron at 22 (vm "circ vm C) is rapidly heated by a torch such that 11 (rm vm kJ) is transferred to it What temperature would the block of irorn reach assuming the complele transfer of heat and no loss to the surroundings? If the same amount of heat was quickly transferred to a 870 (im vm g) pellet of copper at 35 (rm "aire iIm C), what temperature would it reach before losing heat to the surroundings? Express the final temperatures of the iron and copper in lcire Irm C to two significant figures separated by a comma. View Available Hints) Final temperatures of m Fe, m Cu circ m C math 0%

Explanation / Answer

Specific heat capacity (C) = q/m(T2 - T1)

C(Fe) = 0.450 J/g.oC

i.e. 0.450 J/g.oC = 11*103 J/1.4*103 g * (T2 - 22) oC

i.e. The final temperature of iron (T2) = 39.5 oC

C(Cu) = 0.385 J/g.oC

i.e. 0.385 J/g.oC = 11*103 J/0.87*103 g * (T2 - 22) oC

i.e. The final temperature of copper (T2) = 67.8 oC

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