A sample of nickel is heated to 99.8oC and placed in a coffee cup calorimeter containing 150.0 g water at 23.5oC. After the metal cools, the final temperature of metal and water mixture is 25.0oC. If the specific heat capacity of nickel is 0.444 J/oC g, what mass of nickel was originally heated? Assume no heat loss to the surroundings.