Agraduated cylinder is filled to 10.0 ml with water and a piece of granite is placed in the cylinder, displacing the level to 23.7 ml. what is the volume of the granite piece in cubic centimeters

The equation for volume would be

9mm*2mm*2mm

If you put a piece of granite in a cylinder filled to 10ML, displacing the level to 23.7, the piece of granite would have a volume of 13.7

the grams   of   barium that   are in   2.3 x 10^23   atoms of barium   is   52.4 g (answer c)

    calculation

mass = moles   of ba   x molar   mass of ba

  molar mass of ba from periodic table=   137.3 g/mol

  use the   avogadro's law   constant   to   calculate the moles of barium

  that   is     1 mole =   6.02   x 10^23 atoms

                    ? moles = 2.3 x 10^23   atoms

by cross   multiplication

=(1 mole   x 2.3x 10^23 atoms)   / 6.02   x10^23 atoms)=   0.382   moles

mass   is therefore = 137.3   g/mol x 0.382 mol = 52.4 ( answer c)

explanation: