At 20.0 deg Celsius a flask filled with ethanol has a total mass of 48.676 g. The flask is emptied and some ball bearings with a mass of 19.234 g are added to the flask. The flask is topped off with ethanol and now the total mass is 65.761 g. Determine the density of the ball bearings at 20.0 deg Celsius. The density of ethanol at this temperature is 0.78945 g/cm^3. (If you are having trouble visualing the situation, imagine that the ball bearings were dropped into the filled flask and some ethanol overflowed.)