A natural gas furnace is used to heat a home. On average, the home needs to be heated at a rate of 34000 BTU/hr during the winter months. Assuming the amount of heat released by the natural gas during the combustion process is described by the lower heating value and that only 90.8 % of the heat generated from combustion is used in heating the home. When the natural gas combusts (and assume all of it combusts), it creates 860 mg of nitrogen oxides per pound (Ibm) of natural gas. Assuming that the heater is used only 176 days out of the year, what is the amount of nitrogen oxides produced annually? kg