Question

A home solar energy unit uses 400 L of water for storing thermal energy. On a sunny day, the intial temperature of the water is 22 celsius . During the course of the day the temperature of the water rises to 38 celsius as it circulates through the water wall. How much energy ( in joules) has been stored in the water? ( the density of the water at 22 celsius is 0.998 g /mL)

Repeat problem above , but now assume that the calorimeter material itself absorbs a small amount of heat energy , 0.8 kj from reaction. What is the value of traingleH soln?

Answer 1