Question

1) Calculate the specific heat capacity (J/g oC) of iron, if a 803 g sample lost 937.4 J of heat energy in going from an initial temperature of 5.50 oC to a final temperature of 2.90 oC.

2)Calculate the final temperature (oC) of a 243 g sample of water originally at a temperature of 84.6 oC that lost 73640 J of heat energy.

Answer 1

1.
-q = mass x sp.h. x (Tfinal-Tinitial)

2.
-q = mass x sp.h. x (Tfinal-Tinitial)

Answer 2

Calculate the final temperature of 290mL of water initially at 31∘C upon absorption of 20kJ of heat.