A sandy loam soil under a golf course fairway has an organic matter content of 3% by weight. Calculate concentration of N mineralized (mg N per kg of soil OR kg N per kg of soil) and amount of N mineralized in kg N per ha. (Assume 5 kg N per 100 kg organic matter; a mineralization rate of organic matter at 3.5%, soil depth of 10 cm, an area of 1 ha and a bulk density of 1.4 g/cm3).