1.

How much heat is released when 240 gram of iron cools from 90o C to 25o C [ c = 0.452 J/go C] (a) -7.05 kJ (b) -8.04 kJ (c) 6.03 kJ (d) -6.07 kJ

Answer»

40 gram of IRON cools from 90° C to 25° C.To find:Amount of HEAT RELEASED?Calculation:We will use CALORIMETRY EQUATION as follows:Negative SIGN INDICATES that heat is released.Option a) is correct.



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