Question

What is the mass of a bar of aluminum with length 5.3cm, width 0.32 cm and height 2.34cm? The density of aluminum is 2.70g/cm3.

Answer 1

Answer:

mass = 10.72 g

Explanation:

Density of a substance can be found by using the formula

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

Making mass the subject we have

$mass = Density \times volume$

From the question

Density = 2.70 g/cm³

We assume that the aluminum is a cuboid

and volume of a cuboid is given by

Volume = length × width × height

length = 5.3 cm

width = 0.32 cm

height = 2.34 cm

Volume = 5.3 × 0.32 × 2.34 = 3.97 cm³

Substitute the values into the above and solve for the mass

We have

mass = 2.70 × 3.97

We have the final answer as

mass = 10.72 g

Hope this helps you