Answer :
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
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