Question

HELP PLEASE DO THIS I ONLY HAVE 5 POINTS LEFT AFTER THIS I WILL HELP YOU WITH WHATEVER YOU NEED JUST COMPLETE ALL 4 QUESTIONS ON HERE.

Answer 1

mass of coin = 26.76 g

vol = 3

density = 26.76/3 = 8.92 g/cm^3

hence coin is made up of copper

mass of ring = 107 g

vol = 5

density = 107/5 = 21.4 g/cm^3

hence ring is made up of platinum

mass of crystal = 5.28 g

vol = 2

density =5.28/2 = 2.64g/cm^3

hence the crystal is quartz

mass of the block = 184.32 g

vol = 3*4*6 = 72

density = 184.32/ 72 = 2.56 g/cm^3

hence the block is marble