Calculate the amount of heat loss (in kJ to the nearest kJ) through a window in your room over a 4 hour period. Assume your window is 1.69m x 1.82m and is 1.04cm thick, the inner and outer surfaces are 12.2ºC and 0.4ºC, respectively, and the thermal conductivity of the glass is 0.85 W/mºC.