Question

a graduated cylinder is filled with water to a level of 40.0 mL . when a piece of copper is lowered in to a cylinder, the water level rises to 63.4 mL. find the volume of the copper sample. if density of the copper is 8.9 g/cm^3, what is its mass?

Answer 1

To answer this question, you need to find the volume of the copper by dividing the final volume of the cylinder with initial volume. The calculation would be:
63.4ml-40ml= 23.4ml

Then, to find the copper mass you need to multiply the volume with the density. Since 1ml=1cm3 you don't need to convert it. The calculation would be:
23.4ml * 1cm3/ml * 8.9g/cm^3= 208.26gram