Aclear liquid is poured into a beaker containing another clear liquid. a cloudy yellow substance forms, as if out of nowhere, but the rest of the liquid remains clear. what happened?

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.