Question

What is the density of a cube that has a mass of 3.75 g and a volume of 3 mL?

Answer 1

`\displaystyle \rho=1.25\ g/ml`

Step-by-step explanation:

Density

The density of a substance is the mass per unit volume. The density varies with temperature and pressure.

The formula to calculate the density of a substance of mass (m) and volume (V) is:

`\displaystyle \rho=(m)/(V)`

The cube has a mass of m=3.75 g and a volume of V=3 ml, thus the density is:

`\displaystyle \rho=(3.75\ g)/(3\ ml)`

`\boxed{\displaystyle \rho=1.25\ g/ml}`

Since 1 kg=1000 mg and 1 lt = 1000 ml, the density has the same value but with different units:

`\displaystyle \rho=1.25\ kg/l`