Enter the densities and volumes of up to 5 different substances into the calculator to determine the average density of the mixture.

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## Average Density Formula

The following formula is used to calculate the average density of a collection of objects.

D = D1*V1 + D2*V2 +DX*VX / (V1+V2+VX)

- Where D is the average density of the mixture
- D1,D2,DX are the densities of the invidividual substances
- V1,V2,VX are the volumes of each substance in the mixture.

## Average Density Definition

An average density is defined as the total mass per unit of volume of a mixture of 2 or more substances. In the case of the formula above, this is for a mixture with different quantities of each compound.

## Example Problem

How to calculate the average density of a mixture?

**First, determine the densities of each compound.**For this example, there are 3 compounds with densities of 10g/L, 5g/L, and 2g/L respectively.

**Next, determine the volumes of each substance**In this problem, the volumes are measured to be 2L, 5L, and 1L respectively.

**Finally, calculate the average density of the mixture.**Using the formula above, the average density is calculated as (10*2+5*5+2*1) / (2+5+1) = 5.875 g/L.

## FAQ

**How do you calculate an average density of a mixture? **

Calculating the average density of a mixture is done by multiplying the densities of each compound by the volume of the respective compound, then dividing the result by the sum of all of the volumes.

**What is the SI unit of density? **

The SI units for density are g/cm^3. In this case, 1 centimeter cubed (cm^3) is equal to one milliliter (mL), so they can be used interchangeably.