Question

The relative density of kerosene is 0.81 calculate the density of kerosene

Answer 1

Answer:

1. you are right the density of kerosene is 81g/cm cube

Answer 2

Relative density, also known as specific gravity, of a substance is its density realtuve to the density of water. The formula of relative density is given as:

Relative density = Density of substance/ Density of water

• If the relative density of the substance is equal to 1, then the substance has the same density as water.
• If the relative density of the substance is greater than 1, then the density of the substance is greater than the density of water.
• If the realtive density of the substance is lesser than 1, then the density of the substance is lesser than water.

Relative density of kerosene = 0.81

Relative density = Density of substance/ Density of water

We know that the density of water is 1000kg / m³

Relative density of kerosene = Density of kerosene(x)/ Density of water

0.81 = $\frac{x}{1000}$

x = 0.81 x 1000

x = 810 kg/ m³

Therefore, the density of kerosene is  810 kg/ m³.