Suppose that an empty 50mL graduated cylinder weighs 37.801g. After an unknown solid is added, the graduated cylinder and its contents weigh 45.500g. Calculate the density of the unknown(d(water)=0.998 g/mL) if upon addition of this solid and enough water to cover the solid the graduated cylinder and its contents weigh 46.751g and the total volume of the contents is 25.7mL.

Question

jfraser · Answer

Find the mass of just the solid by subtrating the mass of the empty cylinder (37.801g) from the 45.500g. Find the mass of water added by subtracting the mass of the cylinder+solid (45.500g) from the mass of the cylinder\solid\water mixture (46.751g). The volume of water is found by using the density of water, and the volume of water + volume of solid must = 25.7mL. Find the volume of the solid. Divide mass of the solid by volume of the solid. to find the density of the solid