Question

You add 6.1 g of iron to 27.70 mL of water and observe that the volume of iron and water together is 28.48 mL . Calculate the density of iron.

Answer 1

The formula for density$(\rho)=$ $Mass(m)\over Volume(v)$

$m=6.7g$

$v=28.48ml-27.70ml=0.78ml$

Since $1ml=1cm^3,$ the new volume$=0.78cm^3$

Using the formula,$\rho=$ $6.1g\over 0.78cm^3$ $=7.8g/cm^3$

Volume of Iron is therefore $7.8g/cm^3$