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 =

$= > \frac{mass}{volume}$

=> Density=

$\frac{18.2}{2.56}$

=> Density=

$7.1g/cm {}^{3}$

Answer 2

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

• Mass=18.2g
• Volume=2.56cm^3

$\\ \bull\tt\longmapsto Density=\dfrac{Mass}{Volume}$

$\\ \bull\tt\longmapsto Density=\dfrac{18.2}{2.56}$

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

Metal is not iron