Question

Iron has a density of 7.86g/cm^3. Could a block of metal with a mass of 18.2g and a volume of 2.56cm^3 be iron? Show work and explain.

Answer 1

Mass=18.2g

Volume=2.56cm^3

=> Density =

`= > (mass)/(volume)`

=> Density=

`(18.2)/(2.56)`

=> Density=

`7.1g/cm {}^(3) </p><p>`

Answer 2

First calculate density of the the metal (should equal to density of iron)

• Mass=18.2g
• Volume=2.56cm^3

`\\ \bull\tt\longmapsto Density=(Mass)/(Volume)`

`\\ \bull\tt\longmapsto Density=(18.2)/(2.56)`

`\\ \bull\tt\longmapsto Density=7.1g/cm^3`

Metal is not iron