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

Data:
m (mass) = ?
d (density) = 7.87 g/mL
v (volume) = 3.00cm*4.00cm*1.00cm = 12 cm³ = 12mL
Note: 1 cm³ = 1 mL

Formula:

`d = (m)/(v) \to\:m = d*v`

Solving:

`m = d*v`

`m = 7.87 g/\diagup\!\!\!\!\!m\diagup\!\!\!\!\!L * 12\diagup\!\!\!\!\!m\diagup\!\!\!\!\!L`

`\boxed{\boxed{m = 94.44\:g}}\end{array}}\qquad\quad\checkmark`