20.00 mL of radiator liquid, ethylene glycol has a mass of 20.85 g. What is the density of the liquid? Compare this with the density with water

2 Answers

justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

20 mL of ethylene glycol has a mass of 20.85 g. The density of ethylene glycol is the mass per unit volume.

`1 mL = 1*10^-6 m^3` , `20 mL = 20*10^-6 m^3`

The density of ethylene glycol is `(20.85*10^-3)/(20*10^-6)` = `1042.5 kg/m^3`

The density of water is `1000 (kg)/m^3`

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chaobas | College Teacher | (Level 1) Valedictorian

Posted on

Density is mass over volume

Density = mass/volume

Density of ethylene glycol = 20.85 g/20.00mL = 1.04 g/mL

now the denity of water is 1g/mL


If we compare this with the density of water, then the density is termed as "specific density"

Specific density is the ratio of the density of the density with the density of the referance


Specific density = density of the substance/density of the reference


Specific density of ethylene glycol=density of ethylene glycol/denityof water 

Specific density of ethylene glycol= 1.04 / 1.0 = 1.04