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20.00 mL of radiator liquid, ethylene glycol has a mass of 20.85 g. What is the density...

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anasmaroc | Student, Undergraduate | (Level 1) Honors

Posted June 27, 2012 at 4:27 PM via web

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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

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted June 27, 2012 at 4:42 PM (Answer #1)

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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 June 28, 2012 at 12:55 AM (Answer #2)

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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 

 

 

 

 

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