How to Calculate the Density of a Liquid

What are the steps to calculate the density of a liquid?

Given: A 125 ml flask and stopper has a mass of 66.000 g. A 25.0 mL sample of unknown liquid is pipetted into the flask. The flask, stopper, and liquid have a total mass of 92.0002 g.

Calculate the density of the liquid.

Answer:

The density of the liquid is 1.040 g/mL.

To calculate the density of a liquid, you need to follow these steps:

  1. Find the mass of the liquid by subtracting the mass of the flask and stopper from the total mass.
  2. Calculate the density by dividing the mass of the liquid by the volume of the liquid.

Given data:

  • Mass of flask and stopper = 66.000 g
  • Total mass of flask, stopper, and liquid = 92.0002 g
  • Volume of liquid = 25.0 mL

1. Find the mass of the liquid:

Mass of liquid = Total mass - Mass of flask and stopper

Mass of liquid = 92.0002 g - 66.000 g = 26.0002 g

2. Calculate the density of the liquid:

Density = Mass of liquid / Volume of liquid

Density = 26.0002 g / 25.0 mL = 1.040 g/mL

Therefore, the density of the liquid is 1.040 g/mL.

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