The density of toluene (C6H5CH3) at 25 °C = 0.862 g/mL, and its vapor pressure at 25 °C = 28.44 torr. At 25 °C, the vapor pressure of toluene above a solution of naphthalene (C10H8) in 500.0 mL toluene is found to be 27.92 torr. How many grams of naphthalene are present in the solution?