Question

The density of iron is 7.87 g/mL. What is the mass of a 3.00 cm × 4.00 cm × 1.00 cm block of iron?

Answer 1

density =mass/ volume
volume =3*4*1 cm=12
therefore
7.87=mass/12
mass=7.87*12
mass=94.4gram

Answer 2

94.44gm
i have attached the solution above.