Question

5. What is the density of a cube with a side length of 50.0 mm and a mass of 115 grams?

Answer 1

Step 1: Calculate the volume of the cube from the given length

The length of the side of the cube, a = 50 mm = 5 cm (since 10 mm = 1 cm)

Volume of the cube =
`a^(3) = 5^(3) = 125 cm^(3)`

Step 2: Calculate the density from the known mass and calculated volume

It is given that the mass of the cube = 115 grams

Now, density of a given substance is the amount of that substance present in a unit volume

density = mass/volume = 115 grams/125 cm3 = 0.920 g/cm3