how many moles are in 2.35 mg carbon tetrachloride (CCl2)

Find the mass, in grams, of 5.00*10^23 molecules of f2

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.

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added