A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/kg K reads 15.0oC. It is

Question:

A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/kg ∙ K reads 15.0oC. It is then completely immersed in 0.300 kg of water, and it comes to the same final temperature as the water. If the thermometer then reads 44.4oC, what was the temperature of the water before insertion of the thermometer?